I bought a Finis Tempo monofin years ago before the discontinued them. Recently when I was lap swimming the strap adjustments would constantly slip from being so worn down, and I'd have to stop at the end of each lap to put it back on and readjust. I decided it was time for a replacement strap, and it woks great! Even better than the original strap when I first got it, even! Stays in place great.

Nice to have this as a spare part, since the monofin would be unusable without a strap, and it gets a lot of wear.  This appears to be of the same high quality as the original strap.

I have a Mermagica mermaid tail with a Wave monofin. The center clip on my monofin strap broke so I had to replace the whole strap. Have to say I like this replacement and it fits perfect and I find the adjustable sides stay put better than my original which I was always adjusting with the weight of a wet a tail :)

The finnis monofin swim fin replacement strap was exactly what I needed. Easy to install and works like a charm. I'm back in the swim!