Personalized Groovy Vibes Hippie Costume Men Women Kids Retro T-Shirt. This costume is not just clothing; it's a celebration of individuality and creativity. Get ready to express yourself and spread joy with the Groovy Vibes Hippie Costume! 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.