5-i-1 tränare (Thigh Ball Master)

The 5-i-1 trainer (Thigh Ball Master) is designed to strengthen various muscle groups including thighs, hips, arms, chest, and lower back. It combines features of a ball, leg press, inner and outer thigh exercises, and resistance band training.

• The description claims that the device supports multiple training positions including standing, sitting, kneeling, or in a plank position.