M Two Strap Sandal Size:12 the repeated ridges of the Size:25.5 the repeated ridges of the Ortholite® 3D Wave Sense footbed lightly stimulate and massage the nerves along the bottom of the foot and with Altra's signature FootShape toe box and fully cushioned Zero Drop platform you can continue to hike comfortably and balanced ergonomic foam blend helps to relieve pain in high pressure areas Anatomical Arch Support – Provides full contact support of both medial and lateral aspects of the foot Raised Toe Bar – Encourages a natural gripping motion and stimulates circulation Wide Toe Box – Allows for natural movement promoting balance and stability throughout the foot Deep Heel Cup – Cradles the heel to reduce over pronation and provide proper ankle alignment Premium Suede Upper – Breathable