Openheel design with an adjustable strap provides a secure fit for a wide range of foot sizes and shapes. Material and durability Made of Thermoplastic Rubber (TPR): antideformation, lightweight, corrosion resistant, durable, and able to maintain flexibility over time. Comfort and performance design Features a distinctive flameshaped mesh instep that helps reduce water resistance and delivers a comfortable, flexible feel during kicks. Lightweight and travelfriendly Short fins are lightweight and compact, making them easy to pack for travel and holidays. Key benefits Easy to fit: adjustable heel strap accommodates different foot types and sizes. Reliable material: TPR offers a balance of stiffness and flexibility with good longevity. Efficient kicking: the mesh instep design reduces drag for smoother propulsion. Beginnerfriendly: designed to help novices and children reduce leg fatigue during practice. Travelready: compact short fins ideal for luggage and holiday use. 23 practical use scenarios Pool training with kids: practice flutter kicks and improve propulsion in a controlled water environment with a comfortable fit. Family snorkeling trips: provide buoyancyassisted kicking and easier movement in shallow or open water while staying compact in your luggage. Travel or holiday snorkeling: lightweight, short fins that don't take up much space and are convenient to carry for spontaneous water activities. Notes Openheel with adjustable strap is designed to accommodate various foot sizes and shapes while keeping secure during swimming movements. The fins prioritize a balance of flexibility and durability, suitable for recreational swimming, snorkeling, and light training activities.