I've tried multiple brands of resistance bands, and these have to be the best value. For less than $10 each, don't pay more for overpriced competitors. Other brands have foam handles that can harden and/or deteriorate only after a few months of use; these PVC handles lasts for years and years (going on 2 years). The nylon handle strap design is very strong and durable, unlike the adjustable-type bands which can slip during use (very unsafe). The door attachment is also very handy for incorporating more exercises and will not slip.