One Aero Guard | Rule 28 Cutting Edge Cycling Apparel

One Aero Calf Guards

Color: Black

Black
White

Size: S

When your calves indicate you are a smaller size than your shoe size, we recommend sizing down to aid in grip.

Shoe Size

Size	S	M	L	XL
UK	3.5 - 5	5.5 - 7	7.5 - 9.5	10 - 12
US	4 - 5.5	6 - 7.5	8 - 10	11 - 12.5
EU	36 - 38	39 - 41	42 - 44	45 - 47

Calf Circumference


Size	cm	in
S	>23	>9
M	23-28	9-11
L	29-36	12-14
XL	36<	15<

Product variants

Model is 185cm with a calf circumference of 39cm wearing a size XL

One Aero Calf Guards

Color: Black

Black
White

Size: S

When your calves indicate you are a smaller size than your shoe size, we recommend sizing down to aid in grip.

Shoe Size

Size	S	M	L	XL
UK	3.5 - 5	5.5 - 7	7.5 - 9.5	10 - 12
US	4 - 5.5	6 - 7.5	8 - 10	11 - 12.5
EU	36 - 38	39 - 41	42 - 44	45 - 47

Calf Circumference


Size	cm	in
S	>23	>9
M	23-28	9-11
L	29-36	12-14
XL	36<	15<

Product variants

One Aero Guards are designed specifically for triathletes, bringing aerodynamic savings to your bike leg. Utilising the same technology as our aero socks, but unbridled by UCI rules, the increased length of Aero Guards over our socks brings extra aerodynamic savings.

These are the third generation of our Aero Calf Guards, and the fastest yet.

Based on our One Aero Socks, This new generation of guards sees a switch from knitted fabrics to woven, which are lighter and provide greater aerodynamic savings.

The absence of material covering the foot means they are legal to wear under your wetsuit during the swim, saving you even more time in T1.

When is comes to £ per Watt savings, aero calf guards are the best value upgrade you can make in all of triathlon: delivering greater drag reduction than a top-of-the-line aero wheelset, for less than 1% of the price.

If you have any questions regarding sizing, please contact us at info@rule28.com.

Fabric Details

Elastane 35% Poly 65% 165GSM

FAQs

What should I do if I am between sizes or have slim calves?

Grip can be an issue with aero socks as they tend to sit at the widest part of the calf, guards sit above this. If you have any questions about fit, please contact us at info@rule28.com and we can advise.

Can I customise your kit with my team logo or personal design?

Yes. There is a minimum order of 10 pairs for custom designs. Please email info@rule28.com to get started.

How do I look after my calf guards?

Wash on a cool, synthetics wash. Do not use fabric softener or bleach. Air dry only. Do not wash with rough or sharp items as this can damage the kit.

Worn By Champions

Worn by the world's best riders including men's and women's Tour De France Champions.

Worldwide Shipping

We're UK based but we ship worldwide with multiple shipping options available at checkout.

Crash Replacement

Kit damaged beyond use? Send us a photo and get a discount on new kit.

Customer Support

Any questions? We're here to help you, use our web chat or email us.