SKU: 36643517003

3:Sixteen Aero Calf Sleeve™ (pair)

Sale price$67.49 Regular price$74.99
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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18

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For Your Every Summer RSVP, with Code: SUMMER15

Description

3:Sixteen Aero Calf Sleeve™ (pair)Save up to 12 Watts Athletes can now benefit from the watt saving technology found in our record breaking Aero Bridge Undervest. Compared to aero socks, the extra calf coverage gives even greater aerodynamic and time savings. Saving up to 12 watts, these Calf Sleeves are the best investment on the market, with the highest watt aero gain. Developed Alongside the World's Greatest Utilising the same technology as our Aero Bridge Undervest, the 3: Sixteen

 

Save up to 12 Watts

Athletes can now benefit from the watt saving technology found in our record-breaking Aero-Bridge Undervest. Compared to aero socks, the extra calf coverage gives even greater aerodynamic and time savings. Saving up to 12 watts, these Calf Sleeves are the best investment on the market, with the highest £/watt aero gain.

Developed Alongside the World's Greatest

Utilising the same technology as our Aero-Bridge Undervest, the 3:Sixteen Calf Sleeve is born. Developed at the Silverstone Sports Engineering Hub and Derby Velodrome alongside the World's greatest engineers and riders. 

The Calf Sleeves were first introduced to the sporting World during the Sub7 / Sub8 challenge, with the design and name 3:Sixteen a nod towards the 3-hour 16-minute bike leg that was achieved to help guide Joe Skipper to a sub 7-hour Ironman. The team comprised of some of the World's best time-trialists, including Alex Dowsett and recently crowned UCI Hour Record holder Dan Bigham, who crushed the opposing team to deliver one of the most incredible time trials of all time.

Patented Aero-Bridge Technology - How it Works

By stretching smooth fabric over ribbed fabric (raised ridges form a suspension of material like a suspension bridge) to disrupt the airflow by the ridge and then further alter it by the suspended fabric, causing minuscule air particles to enhance displacement of the boundary layer. 

  • Up to 12 Watt saving.
  • Designed for the Sub7 Sub 8 record-breaking challenge.
  • Dan Bigham designed and enhanced.
  • Precisely patterned to maximise aero gains.
  • Aerodynamic materials.
  • TT and track proven.

For sizing, measure the widest part of the calf.

Calf guards can be worn in triathlon competition under your wetsuit and for the duration of the event.

Warranty Information

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 36643517003

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D. Anderson
Chelsea, US
★★★★★ 4
Almost a Five Star
I have used this brand exclusively on my BMW (110K) and Volvo (90K), with synthetic oil changes at 6000 miles religiously, and neither burns a single drop of oil. I have never seen any "failure" of the filter, which remains firm until the end. Unfortunately the price advantage has been eroding over the years- boo. So lost a star for that-
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Reviewed in the United States on March 23, 2015
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Daniel
Draper, US
★★★★★ 5
Only oil filter you should buy if you have a Volvo
Only filter you should be buying if you own Volvo
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Reviewed in the United States on July 18, 2025
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Erik B.
Fort Morgan, US
★★★★★ 5
As advertised
It’s an oil filter - what else can I say but it was as advertised
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Reviewed in the United States on March 15, 2025
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Alex
Charlottesville, US
★★★★★ 5
Like original
It fit as it was the original and it works
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Reviewed in the United States on April 26, 2024
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David
Grantham, US
★★★★★ 5
Coolant hose
Very difficult to get plastic part with o ring installed to slide into opening. It needs to extremely clean and add lubricant. I had to use a lot of force where I was worried about breaking plastic end. It’s been working perfect.
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Reviewed in the United States on April 14, 2024

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