The Gymnic Sens'o'roll is the ideal product for those individuals who are looking to gently increase their level of mobility and flexibility whilst experiencing a light massage. The spikes on the outer most layer of the ball act as massage, grip points whilst the unusual oblong shape challenges the body through a variety of exercises. The exercising roll can also be used in combination with other fitness equipment such as resistance loops and stretch bands. Out of the box the Gymnic Sens'o' roll can be easily inflated for first time use and readily deflated when required for transport or storage - if you need a Faster Blaster hand pump to inflate your Sens'o'Roll, click here. It is recommended for both individuals who have just started their fitness journey and those a little more experienced athletes by varying the type of exercises performed. Class I Medical Device compliant with European regulation. Size: max Ø 50 cm/L 80 cm Warning! In case of puncture the ball bursts. Please make sure that the ball is used on a surface free from pointed objects. Warning! For body weight exercise only. Lifting weights while using the product may cause injuries to the user. Recommended weight: max. 120 kg (270 lbs) / Tested load capacity: max. 300 kg (660 lbs).