Hammer throwing gloves for competition and training: The POLANIK hammer gloves are suitable for competitions and for training. Sizes are available from XS to XXL. Thus, this glove line covers a wider range of sizes than many other glove lines. Made of geniune leather, these gloves protect your hand effectively. The gloves leather is very flexible and fits your hand better than others do. For each POLANIK glove we state the overall length and wrist width. Material: genuine, flexible leather. Manufacturer size information: S. For your left hand. Overall length: 22.5 cm. Wrist width (flat glove): 12 cm.