Personalized Let Shiitake Go T-Shirt. T-Shirt - White with a funny meditating yoga mushroom says LET THAT SHIITAKE GO. Bad food pun, funny food pun, yoga lovers gift. Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.