This is such a useful piece of equipment for home drills. We ordered a large and it’s the perfect size for my teen.If you’re using it indoors - make sure you have LOTS of space. It rolls a lot and is bouncy.Be especially careful when using it for the first time. Your gymnast may be used to foam barrels for their gym, which aren’t bouncy at all, and they may lose control a bit while they get used to the feel of the air barrel.It’s great for drilling body positions and technical skills. It gives plenty of support. It has very sturdy side handles to help stabilize it while a gymnast does a skill, or if you have to move it. It’s way easier to move than foam barrels.My daughter did handstands, back handsprings and even back tuck drills onto it, and it had no issues with collapsing. It’s durable and resilient, and withstood a lot of impact. It does roll a lot, however. If you need it stationary, the cradles are worth buying.Ours came with a pump, but we inflated it with an electric air pump in under 1 minute.This has already become my daughters favorite piece of equipment. Highly recommend!