Aserve Fitness elastic red light.

Light, fitness elastic for retraining muscles and joints. 24mm X 27.5cm X 1.4mm.

Training elastic/gymnastics. Available in 4 different colors that indicate the degree of resistance/hardness.
One of the simplest, cheapest and most effective training tools available. Training elastics are used for many types of exercises in rehabilitation and strength training. They are particularly suitable for training shoulders, arms and legs.
The resistance is adjusted individually by choosing an elastic band in the right size. The wider the elastic band, the harder the resistance.