Made from fda approved food grade silicone, lightweight, portable and dishwasher safe, fegg are the perfect unbreakable tumblers for all indoor and outdoor festive gatherings. These durable silicone cups are also safe for use from -20 to +110°C (-4 to+230°F) - ideal for all your holiday fun! Designed for cozy Christmas gatherings, festive outdoor parties, New Year's celebrations and more, fegg are the ultimate stylish and sustainable outdoor glasses to celebrate the occasion.