Top of the range aero calf guards for triathletes. The same dual-layer technology and woven ribbed fabrics developed for the Neo TT Suit — now extended to full mid-calf height without UCI restrictions.

Model is 5' 2" with a calf circumference of 10.2" wearing a size S
Shop the Silhouette

Shop the Silhouette

Neo Triathlon Suit
Neo Triathlon Suit
Rule 28
$700.00
Neo Aero Guard
Neo Aero Guard
Rule 28
$130.00

Shop the Silhouette

Neo Triathlon Suit
Neo Triathlon Suit
Rule 28
$700.00
Neo Aero Guard
Neo Aero Guard
Rule 28
$130.00

Shop the Silhouette

Neo Triathlon Suit
Neo Triathlon Suit
Rule 28
$700.00
Neo Aero Guard
Neo Aero Guard
Rule 28
$130.00
Built on the Neo Aero Socks platform, which saved 10.2 W at 40 km/h versus the previous generation. New lighter outer panels improve breathability when the heat is relentless.
No foot coverage. Fully legal under the wetsuit, nothing extra to pull on in T1.
Usage

Built for riders looking for the highest performance level possible. Especially relevant for high-speed racing.

Technology

Aero

The Neo suit uses a ribbed under-layer under a smooth upper surface to deliberately “trip” airflow into turbulence around the arms which moves the air-separation point downstream, shrinking the low-pressure wake and reducing overall drag. By combining optimized rib-spacing (macro-structure) under a low skin friction outer layer, the suit achieves substantial drag reduction - translating into substantial power savings for the same speed.

Second Skin

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

Composition & Care

Elastane 39% Poly 61% 125GSM
Elastane 35% Poly 65% 165GSM

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.

Neo Aero Guard

Neo Aero Guard

$130.00 USD
$130.00 USD $130.00 USD
Sale Sold out
Taxes included. Shipping calculated at checkout.
10.2W Saving
Size Size Guide

Performance

Core Elite

Temperature

°C °F
-10 °C 0 °C 15 °C +30 °C
Breathability
2/5
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 14 days of delivery. Items must be unworn and in their original packaging.

View full details

Top of the range aero calf guards for triathletes. The same dual-layer technology and woven ribbed fabrics developed for the Neo TT Suit — now extended to full mid-calf height without UCI restrictions.

Model is 5' 2" with a calf circumference of 10.2" wearing a size S
Shop the Silhouette

Shop the Silhouette

Neo Triathlon Suit
Neo Triathlon Suit
Rule 28
$700.00
Neo Aero Guard
Neo Aero Guard
Rule 28
$130.00

Shop the Silhouette

Neo Triathlon Suit
Neo Triathlon Suit
Rule 28
$700.00
Neo Aero Guard
Neo Aero Guard
Rule 28
$130.00

Shop the Silhouette

Neo Triathlon Suit
Neo Triathlon Suit
Rule 28
$700.00
Neo Aero Guard
Neo Aero Guard
Rule 28
$130.00
Built on the Neo Aero Socks platform, which saved 10.2 W at 40 km/h versus the previous generation. New lighter outer panels improve breathability when the heat is relentless.
No foot coverage. Fully legal under the wetsuit, nothing extra to pull on in T1.
Usage

Built for riders looking for the highest performance level possible. Especially relevant for high-speed racing.

Technology

Aero

The Neo suit uses a ribbed under-layer under a smooth upper surface to deliberately “trip” airflow into turbulence around the arms which moves the air-separation point downstream, shrinking the low-pressure wake and reducing overall drag. By combining optimized rib-spacing (macro-structure) under a low skin friction outer layer, the suit achieves substantial drag reduction - translating into substantial power savings for the same speed.

Second Skin

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

Composition & Care

Elastane 39% Poly 61% 125GSM
Elastane 35% Poly 65% 165GSM

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

Designed for a compressive fit but should not cause discomfort of reduced range of movement.

Your Body Measurements

Size Chart
Size
Calf (in)
Calf (cm)
S
>9
>23
M
9-12
23-31
L
13-15
32-38
XL
15<
38<

How to Get Your Measurements

10.2W Saving
Over an Ironman bike leg (180 km), at 40 kph, a saving of 10.2 W would save our test rider approximately 2 minutes 52 seconds compared to our previous single-layer suit. Put another way, as this rider crossed the line in the Neo Aero Guards, the same rider in our previous guards would be around 1.9 km (1.2 miles) behind.
10.2W Saving