[Specifikacije proizvoda]:

Veličina: ★ crevo: unutrašnji prečnik 6 mm, spoljni prečnik 10 mm, dužina 4m.

[Instructions for use]: This product is a training tool for swimmers and professionals. It is easy to use (the swimmer understands it at a glance) and has a remarkable effect. It is well received by the majority of swimmers.