cups are made of -friendly recyclable aluminum foil which is a kind of food-grade material ,healthy and safe and adults.Flexible and non-stick.,, not easy to be deformed. No Baking tray needed-These muffin cups are made of aluminum foil that make these strong and sturdy. Put into the oven and bake directly. No Baking tray needed. Multipurpose-No-stick Aluminum Foil Ramekin Cups are perfect for indoor and outdoor usages, picnic, camping,cookouts and so on.Widely used by many restaurants, bakeries, and caterers. Save time-You needn't to spend a lot of time washing a bunch of dishes after a party or a huge celebration with these quick disposal foil cups. Baking will bring you more and life will be colorful. These mold sturdy grip for easy handling and serving. safe and healthy for kitchen use. Colour: silver Material: aluminum foil Size: 8cm, bottom diameter 6cm, height 4cm Package Contents: 150 x aluminum foil muffin cups Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.