This gorgeous  grey and white bag is highly practical due to its roomy size, and useful clasp handle. Based on a traditional dry bag, it is a matter of fill her up, then fold the top down, and voila! - a waterproof, easy to carry and to hang-up wash or lunch bag . It will stand up for itself due to its sturdy base. The fabric is made from quality Orla Kiely printed oilcloth and has a water proofed polyester lining  in contrasting cream. 
Extra small - will hold all of your toiletries, lunch or your valuables whilst you skinny dip
Directions for cleaning: if the lining gets wet just pull it out and allow to dry - it will dry pronto. The oilcloth outer can be wiped with a cloth using mild detergent.