Ulster Weavers Groovy Cats Linen Tea Towel. Linen and cotton tea towels have been the core of Ulster Weavers' business for over 125 years. We have a massive range of linen tea towels, waffle weave tea towels and cotton tea towels with plenty of designs to suit absolutely everyone. Ideal gifts and treats for friends and family. Measures 29.1 x 18.9 Inch. An Ulster Weavers design. Machine washable. 100% linen tea towel.