This is a great product. IT DOES NOT LEAK. I've been a cyclist for over 50 years, and every water bottle I've had until this one leaked. This can be a serious problem as the liquid tends to accumulate on the underside of the bottom bracket and interferes with the movement of the cables typically found there. It also looks ugly to have the residue of the leaks all over the down tube and seat tube. Get this bottle and those problems will be behind you. It takes a little while to get used to opening the valve, but it quickly becomes second nature. I've not found it a problem to squeeze the water out though the bottle is clearly more substantial than the typical bicycle water bottle.