The duo lid pack is the perfect two peas in a pod. Containing a straw lid and a push button lid. You'll have a beautifully-designed lid for any activity or ocassion. With spill and leak resistant designs, both will give you complete peace of mind. The duo lid pack also includes a handy strap for carrying on the go, and a removable gold stainless steel straw. It can be mixed and matched with both your ceramic stainless steel or original frank green reusable products and comes with everything you need to use straight away.