The Calm features:

• Upper: Woven polyester
• Lining: Woven polyester/soft fleece
• Insole: Mattress foam padding
• Fit: True To Size, Half Sizes Size Up
• Sole Material: Polyurethane
• Heel Height: 1.5"
• Width: Medium
• Slip Resistant: No
• Orthotic Friendly: No
• Removable Footbed: No