Integrated Slip-Ins, Machine Washable, Memory Foam, Slip-Ins, Vegan. Just Slip In™ to the give-back comfort your active routine has been looking for wearing Skechers Hands Free Slip-ins®: BOBS Sport™ B Flex - Resilient. This laceless slip-on features an engineered mesh upper, twin gore panels, and a cushioned Skechers Memory Foam™ insole. For every BOBS® purchase, a donation is made to animals in need.