Properties: Specialized rubbers prepared in cooperation with Jakub Podgórski, creator of the GT concept. These are extremely durable rubber bands used not only in this type of training, but also in comprehensive sports (motor) preparation. Thanks to four resistance levels, they can be easily selected depending on the exerciser's needs and level of advancement. Their innovation lies in the pioneering system of marking the resistance level of the band, which signals how much force still needs to be applied to its optimal stretching during the exercise. Resistance bands of varying elasticity are used to conduct GT classes. They ensure the appropriate intensity of the exercises performed, regardless of the fitness level of the participants in a given training session. Resistance level I – plum band: the lowest resistance. Designed for beginners or for highly complex and intricate exercises. Resistance Level II – Seaweed Band: Medium resistance. Designed for most people participating in GT training. It is the most versatile and works well in pairs exercises. Resistance Level III – Olive Band: Heavy resistance. Often used in GT strength training by women and as a scaled version for men in most GT programs. Designed for advanced users. In addition to weekly GT sequences, it is often used in the GT Mobility program. Resistance Level IV – Gray Band: The heaviest resistance. Designed for men or women advanced in strength training. It also works well as a counterweight in dynamic and plyometric exercises. power band stretching: elongation by 50% - 12kg 100% elongation - 24kg 200% extension - 45kg Dimensions: - weight: 0.4 kg - width: 32 mm - length when unfolded: 208 cm - color: olive