Oolala Sandal Women's Size:11 the FS4™+ creates a technical

the FS4™+ creates a technical performance sock that strengthens the foot and leg structure and prevents overuse injuries

on the ball and heel of the foot

The lower layer is an EVA foam cushioning cover for maximum comfort

The cushioning layer is made up of energy activating PORON

Wide waistband for comfort and style

Oolala Sandal Women's Size:11 the FS4™+ creates a technicalMade with our revolutionary OOfoam technology, this sandal features a streamlined footbed that compliments every outfit, day or night. OOfoam technology absorbs 37% more impact than traditional footwear. Patented footbed design reduces stress on knees, ankles and other joints. Closed cell foam is machine washable and designed to minimize odor. Feel the OO PromiseTry any pair for 30 days risk free. If you're not 100% satisfied, you can send them back