$15 · Anti-burst stability ball

Energetics 75 cm/30 inch anti-burst exercise ball with air pump. Literally pumped up, used once, then deflated again and put in storage! From website: Created from durable PVC, so it's non-toxic and latex free, which keeps it odour-free. The exercise ball is ideal for use for a wide variety of exercises, including during yoga, Pilates, fitness, core toning, or gym work. A pump is included with the ball to ensure you can keep it properly inflated when you need it.