【Comfortable Material】: Made from cotton and polyester blend fabric, this dog T-shirt is breathable and lightweight. The breathable material keeps your pet cool and comfortable during hot summer days. An excellent choice for spring and summer puppy wear. 【Adjustable Collar Size】: Available in multiple sizes: S/M/L/XL. Featuring a button-fastening collar, the puppy shirt fits snugly around your dog's neck—comfortable without being too tight or loose. 【Small Dog Puppy Sweaters】: These puppy sweaters are suitable for toy breeds and cats, as well as small dogs and cats such as Chihuahuas, Pomeranians, Pugs, Maltese, Shih Tzu puppies, Poodles, and Yorkies. Note: Dog sweaters are intended for small and toy breeds only. 【Versatile Use】: Featuring a classic striped design, perfect for holidays like Christmas, Valentine's Day, anniversaries, weddings, and birthday parties. This puppy sweater for male dogs also works well for everyday wear and pairs beautifully with other dog accessories or outfits. 【Convenient Design】: The clever belly design allows easy bathroom breaks while keeping the sweater clean. Hand wash or machine wash recommended on a gentle cycle.