Aero Base Layer

Name: Aero Base Layer
Brand: Rule 28
SKU: ABL01
Price: 185.0 USD
Availability: InStock

$185.00

Size: XXS

Men's

Size	Chest (in)	Waist (in)	Hip (in)	Thigh (in)
XS	33.9-35.8	28.3-30.3	33.5-35.4	20.1-20.9
S	35.8-37.8	30.3-32.3	35.4-37.4	20.9-22.0
M	37.8-39.8	32.3-34.3	37.4-39.4	22.0-23.2
L	39.8-41.7	34.3-36.6	39.4-41.3	23.2-24.0
XL	41.7-43.7	36.6-39.0	41.3-42.9	24.0-24.8

Women's

Size	Chest (in)	Waist (in)	Hip (in)	Thigh (in)
XXS	30.7-32.3	24.8-26.4	33.1-34.6	19.3-20.1
XS	32.3-33.9	26.4-28.0	34.6-36.2	20.1-20.9
S	33.9-35.4	28.0-29.5	36.2-37.8	20.9-21.7
M	35.4-37.0	29.5-31.1	37.8-39.4	21.7-22.4
L	37.0-38.6	31.1-32.7	39.4-40.9	22.4-23.6

Footwear

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<

Speed Range: Below 50KPH

Below 50KPH
Above 50KPH

Product variants

Shipping And Delivery

Please note, all stated delivery times are estimated and are from the day of dispatch not from the day of order, which may not be the same. Estimates assume no delays with customs clearance.

UK Express delivery is NOT guaranteed to the following postcodes and areas – most of the Scottish Highlands, any remote areas, including nearly all AB, IV, KW, LA, PA, PH, BT, CA18 - CA27, HS1 - HS9, IM, TR21 - TR25, ZE postcodes.

After Care

Use collapsible tabs for more detailed information that will help customers make a purchasing decision.

Ex: Shipping and return policies, size guides, and other common questions.

Need help?

Aero Base Layer

XXS / Below 50KPH

$185.00

Fully UCI Legal - Approved for Paris 2024

Designed to work in parallel with any smooth armed skinsuit or jersey to reduce aerodynamic drag.

Developed in the Silverstone Sports Engineering Hub, the base layer creates macro subsurface structures to trip the boundary layer of air flowing over the arms, yielding aerodynamic savings significantly greater than traditional textured fabrics. 

Below 50kph (Left Base Layer)

Above 50kph (Right Base Layer)

Protected under patent no. EP3213911B1

Fabric Details

Nylon 70%
Poly 15%
Elastane 15%
5.60oz/yd

2/3 Length Sleeve

The upper arm is where the most gains care found. Making the base layer 2/3 length means it can also be worn under short sleeve jerseys for road racing.

Used by TdF Champions

Used by over half the World Tour teams including men's and women's TdF Champions

FAQs

What is the difference between the below and above 50kph variants?

the difference comes from the spacing of the rib structures on the sleeves. For higher speeds, we have found that a narrower rib spacing has proven more effective. These have been developed to provide maximum drag reduction at different speeds. The exact transition point between which is most efficient will depend on the rider's body type, but we have found 50kph +/- 2kph tends to be the case for most athletes.

What kit should i use this with?

The Aero Base Layer is designed to be used with any smooth arm skinsuit or jersey. We do not recommend using this product with any kit that already has a textured arm as this can increase overall drag.

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

Yes, custom designs are available for a minimum order of 10 items per style. Please email info@rule28.cc for more info.

How do I look after my base layer?

Wash on a cool, synthetics wash. Do not use fabric softener or bleach. Air dry only. Always close the zipper before washing. Do not wash with rough or sharp items as this can damage the base layer.

Do you have test data available for these base layers?

Test data is available on our Performance Hub page.