Sea to Summit Frontier UL Collapsible Pour Over Bone White. The easy-to-clean stainless steel mesh filter is sized just right for one serving (approx. 30g) of ground coffee and formed to hold the grounds but filter the coffee oils for a rich satisfying cup of coffee. The mount base fits most mugs and wide-mouth bottle rims and the EU food-grade silicone rubber and stainless steel filter unit slides inside the base for easy transport. It even stows nicely in a Frontier Collapsible Kettle. Specifications for Sea to Summit Frontier UL Collapsible Pour Over: Manufacturer: Sea to Summit Size: One Size Packed Size: 4.2 x 4.2 x 0.6 in Color: Bone White Weight: 2 oz Fabric/Material: Silicone Stainless Steel Polypropylene Capacity: 1.3 liters Age Group: Adults Features of Sea to Summit Frontier UL Collapsible Pour Over BPA-free EU-food grade silicone rubber and stainless steel to be long lasting and easy to clean Super-fine stainless steel mesh to hold in grounds but let the good oils through Low-profile fold-flat design for packability Filter unit holds one serving (approx 30g) of ground coffee Mount base fits most mug and wide-mouth bottle rims Sea to Summit Guarantee is offered for the Lifetime of this product Package Contents: Sea to Summit Frontier UL Collapsible Pour Over Sea to Summit A1227: Frontier UL Collapsible Pour Over Bone White