The fitness mad studio pro pilates ring is a professional training aid based on the original magic circle design it helps target specific muscles and thus makes toning faster the ring is a great way to challenge inner and outer thighs upper arms the chest and even the pelvic muscles this smaller version of the ring has a 12 305cm diameter and offers a greater resistance when compared to a bigger 14 model it has a sturdy tri band sprung steel construction that can easily withstand a