The 45North Jaztronaut is a pioneer in temperature-blocking insoles for cycling-specific footwear. Unlike shoe covers which are penetrable from the bottom, the Jaztronaut is constructed with a 2mm panel of non-compressible aerogel insulation that's laminated inside durable EVA foam to provide the highest thermal performance of any form of insulation. Aerogel has been used by NASA to insulate astronaut spacesuits, as its nano-sized air pockets block out cold and heat, and its ultra-thin, compression-resistant and waterproof insulation provide the lowest thermal conductivity of any solid. When the weather it's at its worse, pair the Jaztronaut with your favorite pair of booties to weatherproof your feet, or simply use alone when the days are dry.
Start typing your question and we'll check if it was already asked and answered. Learn More
Do not include HTML, links, references to other stores, pricing or contact info.
My question is about:
If your question is about more than one item, click + to add them.
No questions have been asked about this item. Be the first!
Questions For Similar Products
Jenson USA ships worldwide, including APO/FPO addresses. For a quote, simply add the items you are interested in to your shopping cart and look for the "Shipping Options" box. You don't have to login or create an account to see shipping charges.
Some manufacturers restrict where we can ship their products. If this item has shipping restrictions, they are listed below. If you'd like to buy an item that we cannot ship to your preferred address, we can accept your foreign credit card and ship to a USA address for you.
Get free 1-day California shipping with your $50 purchase today, on most orders. Please note this offer is only available to physical shipping addresses in California(no PO Boxes), and oversize charges still apply on some heavy/large items