Sport Sliding Discs are light, compact and easy to take with you so you can train wherever you want. • To strengthen the abs, legs, hamstrings, buttocks, the waistband or the whole body. • The sliding discs are double-sided so they can be used on the gym mat as well as on parquet or any type of hard floor. • Abdominal exercises with slippery discs help treat back pain and also help develop effective core strength.