100% high quality combed cotton, super soft comfortable give a wonderful sleep condition, keep warm but not over-heated. M/0-3 years: Length: 80cm/31.5in, Shoulder width: 29cm/11.4in, width at foot: 50cm/19.69in. L/2-5 years: Length: 100cm/39.4in, Shoulder width: 31cm/12.2in, width at foot: 60cm/23.62in. (Please allow 2-3% size difference according to manual measurement.) With adorable design, detachable sleeves, when you remove the sleeve, it can be used as vest sleep bag, preferably three zipper and quilted collar design, it is convenient for your baby in and out of the sleep bag, baby can stretch freely and unrestrained. Perfect sleep bag design with a zipper from top and bottom for easy dressing and quick diaper changes. Zip-front design easy on and off. Generous bag design provides ample room for movement and proper hip development. Sleeves allow baby extra warmth on colder nights. The sleeping bag comes with hand cuff to prevent scratches on your baby’s face and sleeves provide extra warmth to keep your baby warm.