It's an easy and comfortable system to clean our pet's ducklings, and more now with the pandemic! It's a fantastic idea. With the Cup it gives you a plastic bag with drawing and with adjustment, to keep it. He also sends fingerprint stickers to decorate the mug. Size S, for my 13,5Kg French Bulldog, goes great. Small size can be used even for a little larger ducklings. Super fast shipping, arrived in Spain in 7 days. Recommended 100% the seller and item.