【4-in-1 Massage Roller Set】- This kit includes 1 large foam roller(13*5.5inch), 1 muscle roller stick(12*2inch), 1 massage ball(2.4*2.4inch)/Peanut Massage Ball(4.4*2.3inch)/ and 1 storage sack. Convenient and portable, easily fit in your gym bag or backpack and take it anywhere! 【Foam Roller】- The foam roller features ergonomic soft surface that perfectly massages your back, leg, neck, shoulders. It is designed to help increase circulation, ease soreness and stiffness and assist rehabilitation. 【Massage Stick for Muscle Therapy】- In the middle part of the stick are 6 segments covered with numerous dots which help lengthen and stretch out your muscle by applying pressure to the problematic area like back, head, leg and foot, very effective in relieving muscle pain and fatigue. 【Massage Ball】- Massage ball with different appearance allows you to choose how deep you want the massage to be! Massage Ball increases the blood circulation, massage muscles, helping to relieve soreness and pain, great for hips, knee, calves, neck, hand and feet. 【Long-term Training】- can thin legs and reduce fat of thighs. Fits for all fitness level people who want to have a physical training.