BPS Bodyboard Fin Tethers or Fin Savers with Adjustable Ankle Strap These are FREE when you buy a Body-board Package by BPS - only available from Surf and Snow Warehouse on Amazon.com. Provides a secure fit when wearing your swim fins stopping them from being ripped off in strong waves. Buy with complete confidence  as all products from Surf and Snow Warehouse are stored and shipped (quickly and reliably) to you by Amazon in the US. All BPS products are 100% guaranteed - If it doesn't deliver what it is supposed to anytime within 12 MONTHS of purchase, it will be replaced or you'll be refunded - your choice. Thank you for looking at a product from our store, Surf and Snow Warehouse. We are a small family business that ONLY sells what we know and love -- water sports gear. We know our products, use our products, and stand behind them 100%. We are known for the great product support, advice and after-sales service we provide -- so if you have ANY questions about any of our products, please just ask.