Spring Heel Straps (pair) Size:Longer with four points of adjustment

with four points of adjustment and two different-size bungee straps

The open-heel pocket is user-adjustable

Mono-material engineering eliminates the failure points of conventional fins: no glue joints

Every component of FoldingFins™ — blade

no dissimilar-material temperature mismatch

Spring Heel Straps (pair) Size:Longer with four points of adjustmentUpgrade the fit of your FoldingFins with stainless steel spring heel straps. The coil spring holds constant, even tension across your boot a locked in fit that won't loosen as neoprene compresses at depth, with no mid dive adjusting. Saltwater resistant. Sold as a pair. Sizing: Shorter for boots EU 3642 Longer for EU 4348. Pick by your boot size (cut varies by brand), not your foot.