Best Slim Triathlon Suits of 2026

Name: SLS3 Triathlon Suits Women - One Piece Tri Suit - Premium PRO FX Womens Triathlon Suit - Lightweight Trisuit with Slim Athletic Fit
Brand: SLS3

Luke Dobson

Last Updated: 11 Feb 2026

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Slim Triathlon Suits are specialised athletic apparel designed for triathletes, consisting of a one-piece suit that is suitable for all three disciplines - swimming, cycling, and running. The suits are made of lightweight, breathable fabric that is quick-drying and moisture-wicking, ensuring maximum comfort and performance during intense physical activity. With a form-fitting design that reduces drag and maximises mobility, these suits are perfect for serious triathletes who demand the best from their gear. They are available in a range of sizes and colours to suit individual preferences.

At a Glance: Our Top Picks

#TOP 1

SLS3 Triathlon Suits Women - One Piece Tri Suit - Premium PRO FX Womens Triathlon Suit - Lightweight Trisuit with Slim Athletic Fit

9.8

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SLS3 Triathlon Suits Women - One Piece Tri Suit - Premium PRO FX Womens Triathlon Suit - Lightweight Trisuit with Slim Athletic Fit

#TOP1

9.8

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#TOP 2

SLS3 Triathlon Suits Mens - Aerodynamic Sleeved Tri Suit Men

9.7

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SLS3 Triathlon Suits Mens - Aerodynamic Sleeved Tri Suit Men

#TOP2

9.7

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#TOP 3

Women's Triathlon-Suit One-Piece Sleeveless Tri-Suit

9.5

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Women's Triathlon-Suit One-Piece Sleeveless Tri-Suit

#TOP3

9.5

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Top 8 Slim Triathlon Suits

#TOP 1

SLS3 Triathlon Suits Women - One Piece Tri Suit - Premium PRO FX Womens Triathlon Suit - Lightweight Trisuit with Slim Athletic Fit

SLS3

SFX1-202W-BSB-S

Pink Sunrise Blooms

SLS3 Triathlon Suits Women - One Piece Tri Suit - Premium PRO FX Womens Triathlon Suit - Lightweight Trisuit with Slim Athletic Fit, No Shelf Bra (Black/Sunrise Blooms, Small)

9.8

FTB Score

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Features

PERFECT PADDING FOR SWIMMING, CYCLING & RUNNING: Our Custom Foam-Cushioned Pad On This Tri Suit For Women Provides Chafe-Free Support Throughout Your Entire Swim, Bike Ride And Run. The Trisuit Triathlon Women Want That's So Light & Slim!

HOW TO FIND THE BEST FIT: To Properly Fit Into This Black & Print Triathlon Suit Women Need Both Height & Weight Measurements To Match The Specific Size Range (weight Size M & Height Size M). If Both Height & Weight Measurements Don't Match, The Fit May Not Be Ideal

KEEPS YOU COOL: Made Of A Super-Comfortable Nylon/spandex Mix, Your SLS3 Women Triathlon Suit Wicks Sweat, Then Evaporates It FAST, To Keep You Cool & Dry. We Added Mesh Panels On The Side And Back Of These Female Tri Suits To Keep You Even More Comfortable

FRONT ZIP FOR CUSTOMIZED COMFORT: Race Heating Up? Breathe Easy. Just Open The Front Half-Zipper To Let In Cooling Airflow. Chill In The Air? Pull The Zip Back Up & Lock It Down. The Zipper Is Also Long Enough To Easily Get Into & Out Of The Trisuit Women. DESIGNED FOR WOMEN, BY WOMEN – Not All Triathlon Suits Are The Same. We've Designed The SLS Tri Suit And Padding To Comfortably Fit In All The Right Places… Please Note, This Does Not Include A Shelf Bra, So BYOB (bring Your Own Bra)

DESIGNED TO KEEP YOU COMFY & LOOKNIG GREAT: You'll Love The Way This Womens Tri Suit Fits And Looks When You're Racing. Our Flattering Women's Triathlon Swimsuit Is Made From A Flexible Fabric Blend And Stretches In All Directions For A Sleek & Supportive Fit

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#TOP 2

SLS3 Triathlon Suits Mens - Aerodynamic Sleeved Tri Suit Men

SLS3

FX1A-24-BRD-M

Flash

SLS3 Triathlon Suits Mens - Aerodynamic Sleeved Tri Suit Men – Lightweight Trisuit with Premium FX Fabrics - 2 Pockets (Flash, Medium)

9.7

FTB Score

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Features

Breathable & Quick Drying Fabric: Stay Cool And Dry With Our Trisuit Men's Technical Fabric, Providing Excellent Ventilation And Moisture Control For All Race Conditions.

Premium Mens Tri Suit Fit: Designed For Comfort, Our Men's Triathlon Suit Fits Larger Than Other Brands; Check Our Size Chart For The Perfect Fit. Ideal For Triathlons.

Flexible Compression Support: The Trisuit Men's All-Direction Stretch Fabric Offers Muscle Support And Reduces Fatigue, Fitting Like A Second Skin For Maximum Performance.

Custom Foam Padding For Cycling Suit: Our Thin, Chafe-Free Pad Supports Cycling And Running, Ensuring A Smooth Transition And Optimal Comfort Without Bulk.

Aero Design With 2 Pockets: This Triathlon Suit For Men Includes Two Back Pockets For Easy Access To Nutrition And Gear, With A Sleek Aero Design To Reduce Drag.

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#TOP 3

Women's Triathlon-Suit One-Piece Sleeveless Tri-Suit

Santic

K9LG083

Black-purple

Women's Triathlon-Suit One-Piece Sleeveless Tri-Suit - Padded Quick-Drying Slimming for Running Swimming Cycling, Black-purple, X-Large

9.5

FTB Score

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Features

[Specially Designed Golden Ratio For Female] The Santic Tri Suit Has Body-Zone Oriented Panel-Cut With Stretched Legs Waistline Specially Designed For Female Optimal Fit, Easy Create Bubble Butt. And Back Using Visual Illision Of Black And White Parts To Reach Slimming Effect

[3 In 1 Padded Triathlon Suit] The Women's One Piece Triathlon Suits Come With A Foam-Cushioned Pad That Provides You A Chafe-Free Support Throughout Your Entire Bike Ride. Plus, It's So Light & Slim That Will Not Adding Weight And Quick Drying When You Finish Swimming

[Easily Accessible Storage Pockets On Sides] Net Fabricpockets On Left Legs For Storage Keys And Energy Bars Whilst On The Bike Or Run

[Back Zipper With Long Rope] This Suit Is ITU Compliant To Using Back Zipper. Long Rope Can Help Triathletes To Get Dressed More Easily

[All Suit Freely Stretch] The Sleeveless Skin Suit Using Elastic Flat Locked Stitching Designed For Maximum Strength And Minimum Discomfort Against The Skin, Offers Better Aerodynamics And Muscular Compression. And We Added A Non-Slip Band At The Hem To Make Sure The Legs Would Not Ride Up, So You Don't Have To Stop Your Race Again To Adjust Your Trisuit

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#TOP 4

SLS3 Trisuit | Triathlon Suits Womens

SLS3

SFT120W

SLS3 Trisuit | Triathlon Suits Womens - Womens Trisuit – Women`s Triathlon Suit - Trisuits for Women FRT - Anti-friction Seams - Designed by Athletes (Black/Bright Rose Stripes, Large)

9.4

FTB Score

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Features

DESIGNED TO KEEP YOU COMFY AND CUTE: You Will LOVE The Color, Style And Coverage Of This Flattering Women`s Triathlon Suit. Our Flexible Fabric Blend Stretches In ALL Directions For A Sleek And Supportive Fit And It Comes Without Itchy Seams. The Legs Are Long Enough To Prevent Chaffing On The Run Plus The Soft Gripper Keeps The Legs In Place Without The Feeling Of Having “sausage Legs”. We Are NOT Using A Built In Bra So You Can Wear The Bra Of Your Choice – BYOB (Bring Your Own Bra).

To Properly Fit Into Our Suits, Both Your Height And Weight Measurements Must Match The Specific Size Range (i.e. Weight Size M And Height Size M). If Both Of Your Height And Weight Measurements DO NOT Match The Specific Size Range, We Suggest You Consider The Option Of A Top And Shorts Set. This Option Will Provide You A More Comfortable And Flattering Fit. THESE TRI SUITS ARE DESIGNED WITH A SLIM ATHLETIC ELONGATED SILHOUETTE AND OFFER A SLIM ATHLETIC FIT.

ULTIMATE COOL: Made Of A Super-Comfortable Nylon/spandex Mix, Your SLS3 Women Tri-Suit Wicks Sweat, Then Evaporates It FAST, To Keep You Cool & Dry. THESE TRI SUITS ARE NOT RECOMMENDED FOR REPEATED USE IN CHLORINATED WATER.

POCKETS: Thanks To 3 Back Pockets, Your Nourishment Is Always Handy. Reach Easily To Grab Your Energy Gels, Bars & Chews

PERFECT PADDING FOR CYCLING & RUNNING: Our Custom Foam-Cushioned Pad Provides Chafe-Free Support Throughout Your Entire Bike Ride. Plus, It's So Light & Slim You Won`t Even Notice It Is There And It Won`t Give You The Feeling Like Running In A Wet Diaper

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#TOP 5

SLS3 Triathlon Suits Women - Sleeveless Trisuit Women

SLS3

SFX120W-BBR-XS

Sky Pink

SLS3 Triathlon Suits Women - Sleeveless Trisuit Women Cover

SLS3 Triathlon Suits Women – Sleeveless Trisuit Women - Premium FX Fabric, Tri Suit Womens Triathlon Suit, No Shelf Bra (Sky Pink, X-Small)

9.3

FTB Score

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Features

PERFECT PADDING FOR CYCLING & RUNNING: Our Custom Foam-Cushioned Pad On This Tri Suit Women Triathlon Gear Provides Chafe-Free Support Throughout Your Ride. Our Quick Dry Tech Sheds Water And The Profile Is So Light & Slim You Won't Notice It's There

HOW TO GET THE SIZING CORRECT? To Properly Fit Into Our Triathlon Suit Women Need Both Height And Weight Measurements To Match The Specific Size Range (i.e. Weight Size M And Height Size M). These Womens Triathlon Suits Offer Slim & Athletic Fit

ULTIMATE COOL: Made Of A Super-Comfortable Nylon/spandex Mix, Your SLS3 Women Triathlon Suit Wicks Sweat, Then Evaporates It FAST, To Keep You Cool & Dry As The Side Mesh Panels Act As A Ventilation System. Just Open The Easy Pull Zipper

DESIGNED TO KEEP YOU COMFY + CUTE: It's The Trisuit Triathlon Women LOVE For Its Color, Style And Coverage! The Flexible Fabric Blend Of This Flattering Women's Triathlon Swimsuit Stretches In ALL Directions For A Sleek And Supportive Fit, Plus It Comes Without Itchy Seams

DESIGNED FOR WOMEN, BY WOMEN – Not All Tri Suits Are The Same. We've Designed The SLS Womens Tri Suit And Padding To Comfortably Fit In All The Right Places.. Please Note, This Does Not Include A Shelf Bra, So BYOB (bring Your Own Bra)

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#TOP 6

SLS3 Triathlon Shorts Mens - Padded Tri Shorts Mens

SLS3

Jet Black

SLS3 Triathlon Shorts Mens - Padded Tri Shorts Mens – Swim, Bike, Run – Duathlon or Triathlon with Pocket (Jet Black, X-Large)

9.3

FTB Score

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Features

POCKETS PERFECTED: The Essential Carry System Of These Triathlon Shorts Keeps Your Stuff Locked Down. Two Open Hip Pockets Provide Easy Access To Your Energy Gels, Bars Or Chews When Needed.

SUPPORT AND COMFORT WHERE YOU NEED IT MOST: The Fabric Mix Of These Mens Tri Shorts Delivers Unparalleled Comfort And Support. Designed For A Medium Level Of Compression That Supports Your Muscles Without Feeling Tight Or Restricting. The Tri-Shorts Are Finished With Flatlock Seams And An Improved Waistband With Drawstring To Ensure A Chafe-Free Experience During Your Race.

PREMIUM EVERYTHING: Unlike The Big Brands That Overdesign And Overcharge, We Make High-Quality Tri Shorts That Are Made By Athletes For Athletes. We've Built SLS3 To Reflect Our Passions And Values: Make An Awesome Product At An Affordable Price, Delivered Straight To Your House.

PERFECT PADDING FOR CYCLING & RUNNING: These Mens Triathlon Shorts Come With A Foam-Cushioned Pad That Provides You A Chafe-Free Support Throughout Your Entire Bike Ride. Plus, It's So Light & Slim It Won't Slow You Down On The Run.

NO RIDING UP: The Tri Shorts Are Made To Stay Put No Matter The Race Situation. We Added A Softleg Finish At The Hem To Make Sure The Legs Would Not Ride Up, So You Don't Have To Stop Your Race Again To Adjust Your Shorts.

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#TOP 7

dhb Mens Hydron Short Sleeve Tri Suit Black S

dhb

Black

dhb Mens Hydron Short Sleeve Tri Suit Black S

9.3

FTB Score

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Features

It Is 25-Per-Cent Thinner Than Regular Wrap Knit With A Smooth, Soft-Touch Feel.

DHB HYDRON MEN'S SHORT SLEEVE TRI SUIT Feel Great And Deliver Your Best With Our High-Performance Hydron Short Sleeve Tri Suit For Racing And Training, Featuring Vita Fabric Offering Great Coverage At Only 190 Gr/m2.

The CyTech Super-Tri S Pad Gives You A Super Aero Position And Has Been Specifically Designed For Maximum Performance And Comfort On The Bike And On The Run.

Recommended For Rides Up To 6 Hours. Small Size. Triathlon Specific. Extremely Flexible. Quick-Drying Thanks To The Perforated Foam. Comfortable Even During Running And Swimming Races. Unisex.

Plus, EIT Super-Tri Pads With X-MIX Stretch Fabric Platform Guarantee Total Freedom Of Movement And Excellent Fit.

Our Perforated Short Insert With High Density Foam, Provides Maximum Protection With A Slim Profile.

Flat Locked Stitching Ensures A Great Fit And Prevents Chafing. Ergonomic Mesh Back Pockets - YKK Front Lock Zip - Elastic Leg Gripper With Silicone Print - 50+ UV Protection - Fabric VITA (techno-Fabric Eco-Sustainable Made With Regenerated Nylon Thread) Elastic Interface SUPER-Tri S Chamois EIT Super-Tri Pads Have A Special Design Developed To Provide Maximum Performance And Comfort For Multi-Sport Athletes.

Fabric Composition Main: 78% Polyamide Recycled (nylon), 22% Elastane (Spandex) Mesh: 80% Polyamide (nylon), 20% Elastane (Spandex) Care Instructions Machine Wash At 30°C.

Do Not Tumble Dry.

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#TOP 8

SLS3 Triathlon Suits Women - Sleeveless Trisuit Women

SLS3

SFX120W-BMB-XS

Pink Sunrise Blooms

SLS3 Triathlon Suits Women – Sleeveless Trisuit Women - Premium FX Fabric, Tri Suit Womens Triathlon Suit, No Shelf Bra (Sky Blue, X-Small)

9.2

FTB Score

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Features

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Editor's Notes

During our slim triathlon suit research, we found 59 slim triathlon suit products and shortlisted 8 quality products. We collected and analyzed 3,299 customer reviews through our big data system to write the slim triathlon suits list. We found that most customers choose slim triathlon suits with an average price of £20.00.

The slim triathlon suits are available for purchase. We have researched hundreds of brands and picked the top brands of slim triathlon suits, including SLS3, Santic, dhb.

Written by

Luke Dobson

Luke is a runner, a climber, hiker, hunter, and a lot more. Luke Dobson is Celtic-born and has lived most of his life in Scotland. However, his sporting endeavours have taken him to several countries around Europe. He serves as a tour guide for countless companies and owns a couple of gyms and recreational centres in Scotland. Luke Dobson is proficient in 7 different languages. He maintains many sport article columns where he shares his wealth of experience in the sport industry.