SKU: 36643517003

3:Sixteen Aero Calf Sleeve™ (pair)

Sale price$67.49 Regular price$74.99
Save 10%

Pay in installments of $18.75 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 5 - Aug 10

Promo Codes Available:

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 22 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
F
Verified Purchase
Frequent shopper
Lake Worth, US
★★★★★ 1
Don’t buy for dog
Style: Rainbow Snake
This toy is cheaply made my 5 pound poodle had the stuffing out within 5 minutes, not durable for a dog , I’m very disappointed in this item!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 5, 2025
C
Verified Purchase
Christina
Lake Worth, US
★★★★★ 3
Stuffing everywhere
Style: Rainbow Snake
Lasted about 10 minutes before we had a stuffing party.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 9, 2024
A
Verified Purchase
Al
Chelsea, US
★★★★★ 2
Quality
Style: Rainbow Snake
It is very poorly made , my dog had it 5 minutes on Christmas morning & it feel apart,
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 26, 2024
G
Verified Purchase
Georzetta
Port Orchard, US
★★★★★ 5
Durable
This is the best dog toy I have ever bought! I got my 1st one in 2013 and it still squeaks. Admittedly, there is only one squeaker left but it still works. My dog has played with this silly snake more than any other toy she has. My friend often brings her dog when she visits and then the 2 dogs play tug-of-war with the snake. These are small dogs;, one is a pug and one is a small mixed breed that weighs about 15 pounds. They pull and tug with all their might. Even so, my first snake has no rips or tears. The only thing wrong is that most of the squeakers have given up the ghost. That's why I decided to replace snake. I don't think my pug noticed the difference. I washed it as soon as it came out of the package just to make sure there was no residual die in the fabric as I knew my dog would have it in her mouth ASAP. I don't put my dog toys in the dryer but they just have to be washed from time to time. So, all is well with snake except that he is much louder now that all of his parts work. That's the other thing, don't buy this toy if you can't stand the noise.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 15, 2016
T
Verified Purchase
tm13
Los Angeles, US
★★★★★ 5
Dog LOVES this toy
My dog, a Husky/Carolina dog mix, LOVES squeaky toys. Probably more than me, to be honest. Any squeak sound he hears throws him into "I must destroy it" mode. So, for Christmas, I purchased him this Outward Hound Kyjen Invincibles Plush Snake. He. Went. Insane. It was love at first bite. He was squeaking and chewing it all day. However, as I figured, this toy is not invincible. He's already shredded a good portion of it. I had to vacuum up pieces. Luckily, he's never been one to swallow pieces, but I have other dogs who might, so I have to keep a watch on it. If you have a dog who eats pieces, watch them carefully. Fabric can cause blockages in the stomach or intestines of the dog. Overall, this was a great gift for my pup, and I recommend it to other humans with squeaky-toy-loving doggies.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 28, 2015

recommand products