US Patent 10946249 Swim paddle

A swim paddle system includes a substantially planar, rigid paddle having a first side for receiving a hand of a swimmer and a second side opposing the first side with a plurality of through holes extending through the paddle from the first side to the second side, the first side having a palm region for receiving a palm of the hand and a peripheral region for receiving a thumb, an index finger, a middle finger, a ring finger, a little finger, and a wrist of the hand. At least a portion of the paddle is transparent or translucent to allow at least a portion of the hand to cast a shadow as light shines through the paddle.