IST FK31 OTTER Open Heel Trek Swim Fins Size:SM While it will cater more

While it will cater more to hardcore cave divers

Purge valve: N/A

The sturdy non-corrosive plastic X-beam construction allows quick drainage

The TPR gaskets around the lenses form a comfortable

Two straps to fix the scabbard on the calf or forearm included in the package

IST FK31 OTTER Open Heel Trek Swim Fins Size:SM While it will cater moreOpen heel general purpose trek fins made from lightweight, durable materials in a compact size; Short, vented blade features molding and side ribs that direct water backward to increase power while minimizing fatigue; Comfortable, ample foot pocket with drainage vents and slot can accommodate larger booties; Adjustable straps with quick release buckles and thumb loops for easy donning and doffing. Available sizes: small (4 7), medium (7 10), large (10