A waterproof racket includes an annular skeleton, a receiving pocket having a pocket cavity, and a trampoline layer affixed to the receiving pocket. The annular skeleton is received in the pocket cavity to retain the receiving pocket in an annular configuration. The trampoline layer is affixed to a centerline of the receiving pocket, wherein the trampoline layer is stretched to form a trampoline surface in a tension manner.

A waterproof racket includes an annular skeleton, a receiving pocket having a pocket cavity, and a trampoline layer affixed to the receiving pocket. The annular skeleton is received in the pocket cavity to retain the receiving pocket in an annular configuration. The trampoline layer is affixed to a centerline of the receiving pocket, wherein the trampoline layer is stretched to form a trampoline surface in a tension manner.

A tactile reference attachment for releasable attachment to a sports equipment handle providing a user with tactile biofeedback. The attachment includes a tactile reference feature that extends longitudinally along an exterior body surface and is formed with dimensions specifically tailored to harness the user's natural attributes of sensibility, proprioception, and neuromuscular memory to improve a user's accuracy. The tactile reference attachment includes a flexible primary substrate having a plurality of attachment perimeter edges, an exterior surface, an interior surface having an adhesive, a thickness, and at least a first tactile reference projection having a plurality of perimeter edges, a projection width of no greater than 5.0 millimeters, a projection height of at least 0.5 millimeters, and an indentation length.

A tactile reference attachment for releasable attachment to a sports equipment handle providing a user with tactile biofeedback. The attachment includes a tactile reference feature that extends longitudinally along an exterior body surface and is formed with dimensions specifically tailored to harness the user's natural attributes of sensibility, proprioception, and neuromuscular memory to improve a user's accuracy. The tactile reference attachment includes a flexible primary substrate having a plurality of attachment perimeter edges, an exterior surface, an interior surface having an adhesive, a thickness, and at least a first tactile reference projection having a plurality of perimeter edges, a projection width of no greater than 5.0 millimeters, a projection height of at least 0.5 millimeters, and an indentation length.

The present disclosure provides generally for systems and devices for a game utilizing a projectile. According to the present disclosure, the projectile-based game system may comprise multiple components including a projectile, a plurality of contacting elements, a plurality of players, and a base structure comprising internal and external partitioning elements. The projectile-based game may include a base structure with various components and designs. Additionally, the present disclosure may include at least one exemplary process for utilizing a projectile-based game system.

The present disclosure provides generally for systems and devices for a game utilizing a projectile. According to the present disclosure, the projectile-based game system may comprise multiple components including a projectile, a plurality of contacting elements, a plurality of players, and a base structure comprising internal and external partitioning elements. The projectile-based game may include a base structure with various components and designs. Additionally, the present disclosure may include at least one exemplary process for utilizing a projectile-based game system.

A grip adjustment system comprising: a sleeve positionable, in use, on an object configured to be gripped by a user. The system also comprises a distributed array of actuators, each actuator being arranged to actuate a respective portion of the sleeve between a first position and a second position in response to an actuation signal; and a processor. The processor is operable to: receive a pressure distribution and an event quality indicator corresponding to an event of interest; determine an optimal grip based on the pressure distribution and the event quality indicator; select an actuator, of the distributed array of actuators, to be actuated based on the optimal grip; transmit the actuation signal to the actuator such that the shape of the sleeve is changed and the grip of the user is adjusted.

A tactile reference attachment for releasable attachment to a sports equipment handle providing a user with tactile biofeedback. The attachment includes a tactile reference feature that extends longitudinally along an exterior body surface and is formed with dimensions specifically tailored to harness the user's natural attributes of sensibility, proprioception, and neuromuscular memory to improve a user's accuracy. The tactile reference attachment includes a flexible primary substrate having a plurality of attachment perimeter edges, an exterior surface, an interior surface having an adhesive, a thickness, and at least a first tactile reference projection having a plurality of perimeter edges, a projection width of no greater than 5.0 millimeters, a projection height of at least 0.5 millimeters, and an indentation length.

A tactile reference attachment for releasable attachment to a sports equipment handle providing a user with tactile biofeedback. The attachment includes a tactile reference feature that extends longitudinally along an exterior body surface and is formed with dimensions specifically tailored to harness the user's natural attributes of sensibility, proprioception, and neuromuscular memory to improve a user's accuracy. The tactile reference attachment includes a flexible primary substrate having a plurality of attachment perimeter edges, an exterior surface, an interior surface having an adhesive, a thickness, and at least a first tactile reference projection having a plurality of perimeter edges, a projection width of no greater than 5.0 millimeters, a projection height of at least 0.5 millimeters, and an indentation length.

Tool grips and handles may be enhanced by the addition of modular inserts which compensate for two voids in the human hand. A first insert may fill a void in the palm of the hand while a second may fill one by the fingers. By filling the voids, a more natural, relaxed, and customizable grip may be achieved for almost any handle. Use of a plurality of inserts allows for customization according to hand size while the size of the inserts also accounts for the size, dimensions, and axes of the handle and tool in general. Meniscus-shaped inserts may be stacked on one another for optimum effect.