Those reinforcements were designed for Judo practice

The Seppa are two thin plates that are put on both sides of the Tsuba to tighten and adjust the fitting

or have a practice that puts heavy stress on the Tsuba/Tsubadome

for more than a century

(Especially for practitioners having wider hips than waste

Light-Weight Waraku Kendogi (KS100) - Jacket [F]Black Those reinforcements were designed forDeluxe Light Weight 'Waraku' Kendogi (KS100) Made in Japan No backseam Single layer Blue Material: Cotton 100% Shrinkage: ~5% Weight (size 4 Jacket): 0. 55 kg Shape: "Traditional Kendo Cut" Ultra light Kendo Gi, mid range single layer, available in blue. The Kendogi KS100 is the lightest model in the Seido range. Made of a "diamond" weaved fabric used for the entire jacket, this model is slightly longer (about 3 cm) than conventional models and is