Pure Cotton Beach Trousers ACCESSORIZE M&S Cotton Linen High Waisted Trousers in Seaweed Brora Seaside Trousers La Garonne Seaside Trousers La Garonne Women's Trousers Seasalt Cornwall. Fitted, straight leg trousers crafted in organic cotton fabric that is herbal dyed with natural ingredients that is hand embroidered with ocean inspired motifs. A classic pair of trousers are a perfect everyday go to piece. One of the key ways this piece is conscious is that it only uses dyes made from natural ingredients such as minerals, peels, and vegetal powders safer for you, our crafters, and our planet.