I'm selling this because the size was wrong and I couldn't use it. I opened the package once and tried to put it on with gloves, so please refrain from purchasing if you are concerned. I will ship it without the box. Richell S-15 Straw Set for Mugs, Silicone, 140°C to -20°C, 2 sets. - Brand: Richell - Model: S-15 - Compatible Product: B2108 - Set Contents: 2 sets - Material: Silicone rubber - Operating Temperature Range: 140°C to -20°C Thank you for looking.