Personalized I Love My Zayda Very Much Retro Groovy T-Shirt. Whether you're looking for a gift for a special occasion or simply want to express your love, this retro groovy design is sure to bring a smile to your Zayda's face. Embrace your Jewish heritage and show your appreciation for your Jewish grandparent with this heartfelt and trendy product. 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.