Sweaty Betty Glisten Bamboo Long Sleeve Gym Top Made from Sweaty Betty's soft, warm, and eco-friendly bamboo fabric, the Sweaty Betty Glisten Bamboo Long Sleeve Gym Top (£50) is a great layering piece. Image Source: sweatybetty.com Sweaty Betty Glisten Bamboo Long Sleeve Gym Top £50 from sweatybetty.com Buy Now