Our lightest ZEROGRAND yet. Generation ZEROGRAND Stitchlite™ uses our proprietary Stitchlite. a stretchy supportive knit. as its main material. then engineers the rest of the shoe with a cushioned footbed. and unbelievably lightweight molded outsole. You'll also notice we put tabs at the instep and heel for easy on/easy off—creating a shoe as light and easy to pull on as a sock.FOR BEST FIT - If you have a low instep and prefer a snug fit. we suggest ordering a half size down. If you have a medium or high instep. order your normal size. Stitchlite upper in Marine Blue with accents in Gray Pinstripe and British TanShock-absorbing outsole. with deep flex grooves. in IvoryFabric-covered cushioned footbed