Lobster Sports Micro X Tennis Balls 72-Pack

Tretorn Micro-X balls are the gold standard for tennis ball machines, and Lobster Sports ships them co-branded with the Lobster logo in a 72-ball, solid-yellow pack. Unlike standard pressurized balls that go soft within days in a machine hopper, Micro-X balls are neither pressurized nor pressureless — they use patented micro cell technology (700 million air-filled cells per ball) to replicate the feel and performance of a fresh pressurized ball while holding up over the long run like a pressureless ball. The result is consistent flight, bounce, and playability session after session without constant restocking.

High-visibility flex-felt provides optimal core dynamics and durability. The construction makes these balls equally well-suited for cold climates, high-altitude courts, and lower-bouncing surfaces where standard balls struggle. Lobster Sports officially recommends Micro-X balls for use with all Lobster ball machines.