ARP Tennisball FST Comfort (4-Pack)

The supertournament ball named S-TU (new name is FST Comfort) is ideal for players of all classes. The durable internal-pressure ball with abrasion-resistang high-tech felt guarantees optimal play comfort. The price always refers to a 4-piece can.

ARP S-TU (FST Comfort) internal-pressure ball in tournament quality. The test winner in tennis magazine (May 2004)

The ARP-S-TU (FST Comfort) ball, in all its characteristics and materials used corresponds to an official ball used in the team seasonal games in tennis of youth and adults in Germany. 

The felt used on it is manufactured by WSP Textiles, the felt manufacturer of all team-seasonal game balls sold in Germany. 

The branded products marketed at approximately the same price as the ARP S-TU (FST Comfort) ball are generally balls with much cheaper neddle felt, which differs from the woven felt used at the S-TU due to the following details: 

- damping properties: 
Due to the significantly lower thickness of the neddle felt, the ball feels considerably harder. Especially due to the better damping properties a tennisball with woven felt should always be the first choice. In the case of internal pressure balls, it should also be mentioned that as the felt thickness decreases, the ball softens due to the pressure loss. With a balanced ratio as in the S-TU, the two effects almost equal over a long period of time, so that there is a costly feeling while maintaining the same jumping properties of the ball. 

- wear and tear of the felt:
Since needle felt is not woven but consists of a close-meshed carrier material of parallel arranged fibers, the durability is given not only conditionally. Especially with aggressive spin the felt loses an enormous amount of fibers from the felt composite. These lost fibers cannot be replaced by those behind them and therefore quickly lead to an unplayable ball (even though the internal pressure of the ball would have been sufficient).

Woven felt represents a much more stable alternative. Due to the weaving technique, the felt fibers dissolve much more slowly and, above all, more controlledly out of the fiber composite. The fluff located behind the dissolved fibers controls and replaces the lost ones. Thus, the S-TU is given a constant "fluffiness" over a long period of time. 

All these advantages make the ARP S-TU (FST Comfort) Ball an economical product for players who value constant product features.

Delivered in cans of 4 balls