Air Cooled Goga Mat Insole, Flex, Machine Washable, Soft Stride, Stretch Fit, Ultra Go, Vegan. Step-in to convenient walking comfort and cushioning wearing Skechers GO WALK® Flex - Cali Sunset. This laceless sporty style features an ombre Stretch Fit® engineered knit upper, Skechers Air-Cooled Goga Mat™ insole, lightweight ULTRA GO® cushioning, and a super flexible midsole.