The coloured Scholl Sun sandals feature a PVC upper and the Biomechanics® technology insole. The anatomic shape of the insole with its Tri-planar control system helps improve posture and alignment of the foot whilst providing excellent comfort. The tone-on-tone buckle allows you to adjust the upper to suit your foot. The insole surface is designed to reduce the possibility of the foot slipping, even when wet. The sole is slip-resistant. The Biomechanics® collection shoes are CE approved Medical Devices. Read the warnings and user instructions carefully. Approval dated xx/xx/xxxx