Shop › Seaweed Surf Tumbler Image 1 of 2 Image 2 of 2 Seaweed Surf Tumbler $35.00 A unique sea clay glaze. Seaweed surf color glaze on a cup with dimples to assist with grip. 16 ounces. Quantity: Add To Cart Added! A unique sea clay glaze. Seaweed surf color glaze on a cup with dimples to assist with grip. 16 ounces.