Design & Details: Consistent flight, liveliness, and durability Using the fibonacci sphere algorithm, joola has produced a patent pending design for 40 precisely equidistant holes Polyethylene material performs consistently in warmer climates and naturally hardens in lower temperatures to resist cracking and deforming Designed to reduce the impact of the wind to create a predictable and consistent trajectory Design and materials used to perfect the playability have the knock on effect of producing a premium, long lasting, durable pickleball for outdoor or indoor play Our engineers used the fibonacci sphere algorithm to create a patent-pending design for 40 precisely equidistant holes Specs: Size: 74MM Weight: 26g