Saya is a Japanese word meaning sheath.
This Universal Saya from Shun knives is made from blonde colored bamboo and is very sturdy. The base has a locking pin so your blade doesn't slide of out its sleeve. It has a loose fit that won't dull knives and gives it some breathing room. It has a universal fit for 7"-8" Shun Chef's, Asian Cook's, and Santoku knives.