Personalized Be Happy Good Vibes Laughing Therapy T-Shirt. erfect for gifting or treating yourself, the Be Happy Good Vibes Laughing Therapy design encourages a lighthearted approach to life. Wear it to inspire happiness and connect with others who share your positive outlook. 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.