The Slendertone Bottom Accessory replicates bottom toning exercises, a 30 minute session is as effective as doing 60 reversed leg lifts, proven by experts to be the best exercise to tone, tighten and reshape your bottom. The Slendertone Bottom toner garment has been ergonomically designed and incorporates the stimulation area into a comfortable shorts garment. There is also a pocket to hold the unit during use. All Slendertone products use EMS toning technology, which works by sending signals to your nerves to contract and relax your muscles, similar to regular toning exercise. This EMS technology is often used in medical institutions around the world to strengthen and rehabilitate muscles, so you can be confident it works! New Slendertone Bottom features: 4 bottom toning programmes from beginner to advanced Patented EMS technology 0-99 intensity levels for maximum effectiveness 'Warm up' and 'cool down' phases Up to 99 intensity levels Intelligent training system to auto-progress through the programmes Rechargeable handheld controller for easy usage Fits sizes 6-12 (Waist: 24"-32" / 61-81cm; Hips: 32"-38" / 81-97cm) Please Note: Requires rechargeable and interchangeable Slendertone Controller. The Slendertone Female Abs comes with a rechargeable and interchangeable Controller. Why not combine with the Abs Accessory for an effective multi-body toning. Available from Current Body. com: Female Abs Independent clinical trials : 9 out of 10 users reported an improvement in shape