Based on our One Road Race Skinsuit, the Triathlon Suit, a no compromise aero suit, built for speed without sacrificing comfort.

Model is 5' 2" and 115lbs wearing a size S
Shop the Silhouette

Shop the Silhouette

Womens One Triathlon Suit
Womens One Triathlon Suit
Rule 28
£350
One Aero Calf Guards
One Aero Calf Guards
Rule 28
£40

Shop the Silhouette

Womens One Triathlon Suit
Womens One Triathlon Suit
Rule 28
£350
One Aero Calf Guards
One Aero Calf Guards
Rule 28
£40

Shop the Silhouette

Womens One Triathlon Suit
Womens One Triathlon Suit
Rule 28
£350
One Aero Calf Guards
One Aero Calf Guards
Rule 28
£40
The suit features fabrics that until now have only ever been used in limited scope for the world’s most elite cyclists and triathletes. Utilising ultra-high-performance fabrics throughout to power you through your bike leg with full range of motion for the swim and run.
The rear of the suit features two aerodynamically profiled pockets, large enough to store enough to keep you fuelled through longer races.
Surpassed in performance by only our Neo Suit
Usage

Built for riders chasing elite aerodynamics in every scenario. Pairing wind-tunnel optimised panel layouts, state of the art R&D, and custom-made fabrics.  A package that provides World Tour-grade performance, ready to wearand race.

Wear it for high-velocity training, decisive efforts, and race days where optimal aero matters as much as power.

Surpassed in performance only by our Neo collection.

Technology

Aero

Lightweight woven fabric with custom spaced vertical ribs to turbulate aeroflow where needed producing excellent aero savings reduce drag.

Second Skin

Custom made, ultra-low skin friction fabric, made from very fine, high density fibres hides the body from the wind.

Features
  • 2x large rear pocket with aerodynamic, ergonomically angled entry
  • Custom made fabrics for unrivalled aerodynamic performance
  • Elastic Interface Triahlon Performance Chamois
  • Invisible zipper for minimal drag
  • Integrated leg grippers
  • Waist height opening below zipper to aid with nature brakes
Composition & Care

Elastane 35% Poly 65%, 125GSM

Machine wash cold (30° max)

Do not bleach

Don not store damp

Do not tumble dry

Do not dry-clean

Warranty

All pieces carry a one-year manufacturing warranty from date of purchase. This covers defects in materials, workmanship, and construction faults. Thsi does not extend to normal wear and tear, or improper care. This warranty only applies only to purchases made directly through our site.

For any claim, reply to your order confirmation email or write to info@rule28.com with your order number and clear photos. We’ll handle it the same day.

Crash Replacement

If the worst happens and your kit is damaged beyond repair in a crash, send us clear photos of the damage along with your original order details.

We’ll sort a discounted replacement the same day we receive them. Like-for-like where possible.

This sits alongside the standard one-year manufacturing warranty and doesn’t cover normal wear or misuse.

Just email info@rule28.com — we’ve got your back when the road doesn’t.

Womens One Triathlon Suit

Womens One Triathlon Suit

£350 GBP
£350 GBP £350 GBP
Sale Sold out
Taxes included.
13W Saving
Color White
Size Size Guide

Performance

Core Elite

Temperature

°C °F
-10 °C 0 °C 15 °C +30 °C
Breathability
3/5
Duration
4/5

Need Help?

Check out our FAQ first for answers.
Still need assistance?
Our support team is here to help.
Reach out through our contact form.

Shipping & Returns

Returns are accepted within 30 days of dispatch. Items must be unworn and in their original packaging.

View full details

Based on our One Road Race Skinsuit, the Triathlon Suit, a no compromise aero suit, built for speed without sacrificing comfort.

Model is 5' 2" and 115lbs wearing a size S
Shop the Silhouette

Shop the Silhouette

Womens One Triathlon Suit
Womens One Triathlon Suit
Rule 28
£350
One Aero Calf Guards
One Aero Calf Guards
Rule 28
£40

Shop the Silhouette

Womens One Triathlon Suit
Womens One Triathlon Suit
Rule 28
£350
One Aero Calf Guards
One Aero Calf Guards
Rule 28
£40

Shop the Silhouette

Womens One Triathlon Suit
Womens One Triathlon Suit
Rule 28
£350
One Aero Calf Guards
One Aero Calf Guards
Rule 28
£40
The suit features fabrics that until now have only ever been used in limited scope for the world’s most elite cyclists and triathletes. Utilising ultra-high-performance fabrics throughout to power you through your bike leg with full range of motion for the swim and run.
The rear of the suit features two aerodynamically profiled pockets, large enough to store enough to keep you fuelled through longer races.
Surpassed in performance by only our Neo Suit
Usage

Built for riders chasing elite aerodynamics in every scenario. Pairing wind-tunnel optimised panel layouts, state of the art R&D, and custom-made fabrics.  A package that provides World Tour-grade performance, ready to wearand race.

Wear it for high-velocity training, decisive efforts, and race days where optimal aero matters as much as power.

Surpassed in performance only by our Neo collection.

Technology

Aero

Lightweight woven fabric with custom spaced vertical ribs to turbulate aeroflow where needed producing excellent aero savings reduce drag.

Second Skin

Custom made, ultra-low skin friction fabric, made from very fine, high density fibres hides the body from the wind.

Features
  • 2x large rear pocket with aerodynamic, ergonomically angled entry
  • Custom made fabrics for unrivalled aerodynamic performance
  • Elastic Interface Triahlon Performance Chamois
  • Invisible zipper for minimal drag
  • Integrated leg grippers
  • Waist height opening below zipper to aid with nature brakes
Composition & Care

Elastane 35% Poly 65%, 125GSM

Machine wash cold (30° max)

Do not bleach

Don not store damp

Do not tumble dry

Do not dry-clean

Warranty

All pieces carry a one-year manufacturing warranty from date of purchase. This covers defects in materials, workmanship, and construction faults. Thsi does not extend to normal wear and tear, or improper care. This warranty only applies only to purchases made directly through our site.

For any claim, reply to your order confirmation email or write to info@rule28.com with your order number and clear photos. We’ll handle it the same day.

Crash Replacement

If the worst happens and your kit is damaged beyond repair in a crash, send us clear photos of the damage along with your original order details.

We’ll sort a discounted replacement the same day we receive them. Like-for-like where possible.

This sits alongside the standard one-year manufacturing warranty and doesn’t cover normal wear or misuse.

Just email info@rule28.com — we’ve got your back when the road doesn’t.

Size Guide

Race Fit. Suit should feel skintight but not restrictive to movement.

Your Body Measurements

CM IN
Size Chart
Size
Chest
Waist
Hips
xxs
76-80
<53
82-86
xs
81-85
63-68
87-91
s
86-90
69-73
92-96
m
91-95
74-78
97-101
l
96-100
79-83
102-106
Body measurement guide

How to Get Your Measurements

1

Chest

With your arms relaxed by your sides, measure the broadest area of your chest, just beneath your underarms.
2

Waist

Measure around the slimmest part of your waist.
3

Hips

Stand naturally with feet shoulder-width apart and wrap the tape around the widest point of your hips.
13W Saving
Over an Ironman bike leg (180 km), at 40 kph, a saving of 12.98 W would save our test rider approximately 3 minutes 44 seconds compared to our previous single-layer suit. Put another way, as this rider crossed the line in the One Tri Suit, the same rider in our previous suit would be around 2.5 km (1.55 miles) behind.
13W Saving