Personalized Retro Groovy Mama Family Birthday 60s 70s Hippie Costume T-Shirt. Stand out and embrace the groovy vibes with this unique birthday apparel. It's not just clothing; it's a way to express your love for family and fun times. Get ready to create lasting memories while looking fabulous in this eye-catching design! 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.