Climachill Sonic Boost – Released alongside the custom CC Sonic Boost is the slip on version which features 2 stretchy bands across the midfoot in place of the laces and overlays. Like the lace version, these have the 360 degree Climachill mesh bootee design to keep your feet cool as well as the Boost cushioning in the forefoot. They are pretty light at 8.2 oz for the men’s size 9 and 6.8 oz for the women’s size 7 and have a heel toe drop of about 9mm.  The Sonic Boost AL is currently in stock now in men’s sizes 6.5-15 and women’s 5-12 for $100.  If you are looking for a light and breathable shoe for natural running in a slip on design, be sure to check out the Climachill Sonic Boost.

Update: The Climachill Sonic is now sold out.