Dispositivo portatile per l'allenamento della respirazione, con resistenza regolabile, unisex, per l'allenamento dei muscoli orali, della capacità polmonare e della respirazione diaframmatica.

Portable Design: This compact muscle trainer measures only 10 x 5 cm, easily integrating into your daily life for anytime, anywhere workouts; enhance muscle strength and flexibility. Adjustable Resistance: A customizable rotary valve allows for personalized muscle training; simply rotate left or right to easily adjust resistance intensity; optimize your workout for better results with personalized settings. Multi-functional Trainer: Suitable for various sports including track and field, running, swimming, gymnastics, and martial arts; improve your performance and endurance in different events.