Features: Stainless steel cup is safe, non-toxic, easy to clean and durable, the surface is smooth. Collapsible design makes the cup portable and compact. Mini size and light weight, with key chain so you can hang it at your backpack. Great for drinking and teeth-brushing when you go traveling but it never occupies too much space of your luggage. Suitable for travel and outdoor activities such as hiking, camping and fishing. Specifications: Condition: 100% Brand New Material: Stainless Steel Color: Silver Optional Type & CapacityFolding Size(D x H)Extended Size(D x H) #1: 6-folding60ml5*1.8cm/1.97*0.71in6.3*4.8cm/2.48*1.89in #2: 3-folding150ml6.5*3cm/2.56*1.18in7.3*6cm/2.87*2.36in #3: 4-folding250ml8*2.8cm/3.15*1.1in8*7.5cm/3.15*2.95in Weight: approx. 66g~139g/2.3oz~4.9oz Package List: 1 x Stainless Steel Collapsible Cup Note: 1. Please do not put the cup close to stove or fire. 2. It you use it to contain hot water, it is not suitable for baby to use in order to avoid scalding. Stainless steel cup is safe, non-toxic, easy to clean and durable, the surface is smooth. Collapsible design makes the cup portable and compact. Mini size and light weight, with key chain so you can hang it at your backpack. Great for drinking and teeth-brushing when you go traveling but it never occupies too much space of your luggage. Suitable for travel and outdoor activities such as hiking, camping and fishing.