The Monofinger  pocket-sized Monofinger offers many opportunities to train your single finger grip anytime, anywhere.
Monofinger  is a training device, which can make your fingers significantly stronger.
 
Characteristics
Pro Training
Quantity: 2
Size: XS
Extra Light Resin ( Mistura produzida com garrafas pet  e fibras naturais recicladas tornado nossos produtos mais resistentes, leves and sustainable)
Durable and skin-friendly texture
Approximate difficulty level: Advanced