XS Scuba Standard Spring Straps. 

Features: 

• Attaches to most brands of “large post” fins
• Comfort heel pad has a large finger loop, which allows easy on/off, even with thick gloves
• Stronger than traditional rubber straps
• No tightening or adjustments needed
• Passivated 304 stainless spring will not rust
• Internal safety line prevents over-stretching
• Available in three sizes:
• Small
• Spring Length 8" / 200mm
• Overall Length 14.5" / 370mm
• Medium
• Spring Length 8.5" / 220mm
• Overall Length 15.5" / 390mm
• Large
• Spring Length 9.5" / 240mm
• Overall Length 16" / 410mm

How to select the proper size Spring Straps?

• Insert your foot into the fin pocket while wearing a boot
• Measure from the attachment point on one side of the fin, around your heel, to the other side
• Choose the spring straps with an overall length that is approximately 1 inch shorter than this measured distance