• Adjustable two-strap fastening
• Lightweight shock-absorbing EVA foam*
• Synthetic upper
• Rubber sole

*The EVA material is a foam commonly used in the midsoles of sneakers that provides great shock absorption when walking or running. While "comfort" is (of course) a subjective term, it is often considered more comfortable than traditional midsole and outsole materials such as cork, leather, and rubber.