MSR Mugmate Coffee/Tea Filter One Size. Its low profile enough to be stored in just about any mug or cup and it weighs just .98 oz./28 g. Specifications for MSR Mugmate Coffee/Tea Filter: Manufacturer: MSR Size: One Size Packed Size: 3.5 x 3.5 x 3 in Weight: 1 oz Fabric/Material: Nylon Width: 3.5 in Height: 3 in Package Contents: MSR Mugmate Coffee/Tea Filter MSR 321003: Mugmate Coffee/Tea Filter One Size