Castelli set out to create their warmest bootie ever, the Estremo Shoecover, which meant rethinking how booties are made. For the windproofing Castelli went with GORE-TEX INFINIUM WINDSTOPPER fleece-backed fabric, which also lets more moisture escape than any other windproof fabric. Then they added a second fleece layer with Polartec Power Stretch Pro, which is unrivaled in overall loft. The two layers are thick enough that Castelli had to do a wheel well single-layer construction by the ball of the foot to prevent the fabric from rubbing on the crank. Castelli made the bootie high for extra warmth and gave reasonable splash protection. The Estremo Shoecover is finished with a YKK Aquaguard zipper and reflective details. Temp Rating: -10°-5°C / 8°-41°F.
One coupon per order
Discount taken off MSRP for normal items
Custom kit pricing is complicated so we take the discount off the current build price
In stock items only
Coupons can not be combined with promotional gift certificates, however, purchased gift certificates may be used with the coupons. If you would like to use your coupon with a purchased gift certificate, please leave the gift certificate information in the comments section at checkout, and they will be applied during processing on the backend.
Some items are restricted
Groupsets, hand built wheels, special orders & labor costs are excluded from the coupon.
Additional exclusions may apply.