•EverFlex material: EverFlex is an ultra stretch neoprene with enhanced abrasion resistance. EverFlex is used on the inside and outside of the Everflex line of steamers & jackets for maximum comfort, stretch and durability. Also used in other models in areas needing 'extra' stretch, like under-arms, back of knees and calves. •Comfortable and robust rubber sole. •Toe and heel caps with rubber reinforcement to improve comfort and longevity. •105° slant at the ankle area to mimic foot orientation in its natural swimming position.