Blaster Bite Valve Sheath 2-Pack

These are noticeably thicker and sturdier than the ones that came with my old pack, which is great because I tend to chew on the mouthpiece. The silicone feels soft but tough, and they seal tightly with no drips.

I chew through bite valves constantly, so these silicone sheaths are exactly what I needed. Two in the pack means I've got a backup ready for the next time I gnaw a hole in one.

These sheaths are made of silicone and give a much softer bite than the bare valve I was using before. I chew through my hydration tube constantly on long runs, and after a few weeks these are still holding up with no tears. Snapping them on took seconds.