Powerskin® ST 2.0 Jammer Topeak Pro Penn Marathon is the

Pro Penn Marathon is the official ball of PTR because of its guaranteed longevity

Innovative sliding dropout allows quick wheel installation

Regular-Duty Felt (for soft courts) and Extra-Duty High Altitude (for higher altitudes)

are not permitted

available for young swimmers

Powerskin® ST 2.0 Jammer Topeak Pro Penn Marathon is theThe Powerskin ST 2. 0 is a high performing racing Jammer, that guarantees strong compression as well as excellent durability in chlorinated water. Description Arena Powerskin ST X Raptor Jammers Suitable for both men and older boys. The Powerskin ST is a high performing racing Jammer, that guarantees strong compression as well as excellent durability in chlorinated water. Thanks to the fabric thinness and the comfort guaranteed by a higher content of