27.5 Inch Shrader Valve Extra Strong Self-Sealing Tire Inner Tube 27.5”/650b X 2.0 to 2.4 Inches

Delivered as mentioned. Good for those who ride bikes through sand where could be sharp objects.

I noticed slime all under my bike rack recently and my tire was deflated a little. I must've got a tire puncture last week but the slime successfully sealed it without me even knowing it happened! I have a cheap e-bike that came with trash tires too. Absolutely worth the price. Great tubes! Two thumbs up! Anyone who has ever had to replace the back tire on a e-bike knows how annoying it is, whether dealing with the greasy chain, having to readjust the disc brake, etc. So having these slime tubes to prevent that from happening is a great thing. :) I'd suggest stocking up on these! 3-4+ of them at least.

All good

Not scared of having flat tire because of this product,bought two already

As the header says, it's too soon to tell, at least in terms of longevity and its claim to self-heal small punctures. But it was easy to install, with nary a problem. So far, so good. But if it fails, I'll be back, rest assured!