I thought that this was a really cleaver thing since I haven't seen any Hawaiian shirts for dogs before. The shirt is made from 100% cotton making this outfit breathable and perfect for the summer time. One thing to keep in mind is to pick a size that is smaller than what you usually get since these do run small. They do have a sizing chart on their website that can help you with the size you need to choose. They also have a more fitted shirt that says peace on the back. This shirt is machine washable but they don't say anything about drying so I would air dry it to be safe. The buttons are sewn on pretty well since they stayed on even though the button looks like they are going to burst when you put the shirt on a big dog.
http://www.michadoggywear.com/collections/featured-products/products/hip-hawaiian-shirt
http://www.michadoggywear.com/collections/featured-products/products/hip-hawaiian-shirt