Spenco Men's Canvas Yumi Sandals Color:Straw/Java/Cork They have a 4-way stretch

They have a 4-way stretch fabric with silpure that helps to prevent blisters while controlling odor

Fill roller ¾ (75%) full with warm tap water and replace stopper firmly

to design a thin cork shoe insole that is perfect for tight-fitting and/or low-profile footwear such as ski boots

The Spenco Men's Canvas Yumi Sandals are built off of the Total Support footbed platform

Spenco Men's Canvas Yumi Sandals Color:Straw/Java/Cork They have a 4-way stretchProduct Details Overview: The Spenco Men's Canvas Yumi Sandals are built off of the Total Support footbed platform, that offers increased heel cushioning and underfoot support, making them the most comfortable sandals you will ever wear. With a deep heel cup, semi rigid orthotic arch support, metatarsal support, and cushioning, makes this an unbelievable product that is far ahead of all others. Product Features: Semi rigid orthotic arch support