It has strong well calibrated 5 springs good for exercising your abs, reduce waist tummies and strengthen your arm muscles. Its foot and arm handles are well contoured for comfortable use. Exercise away unwanted inches in a work-out that takes just a few minutes each day and get that delightful figure you have always desired. Enjoy the flat, firm stomach you have always wanted. This tummy trimmer is ideal for trimming and strengthening your arm, legs, hips and thighs.