[Lower body training is possible anywhere just by fixing it]
Use the TRNR Ankle Strap X to start designing your resistance gym. Designed for lower body workouts, the strap features a Velcro closure and ultra-flexible neoprene to provide convenient adjustability and superior comfort. You can attach up to 5 Strength Tubes X (sold separately) to create a resistor combination to suit your needs.
Note: Other TRNR X-Series components for completing the resistance gym (Strength Tubes X, Strength Handles X, Strength Bar X, Door Anchor X, and Outdoor Anchor X) are sold separately.