kaiya baby brand is dedicated to the health and safety of infant sleeping bags. We specialize in the following product categories: baby sleep sack toddler sleep sack newborn sleep sack baby wearable blanket infant sleep sack. Our styles include: one-piece with sleeves, one-piece without sleeves, two-piece with sleeves, two-piece without sleeves, and swaddle designs. Our colors include: solid colors (black, white, pink, yellow, green, blue, purple, gray, silver, off-white, red, gold), stripes, shells, constellations, and clouds. We offer 3 sizes for you to choose from: S (0-6 months), M (6-18 months), L (18-36 months)/(3T-4T)(2T-3T). There are 4 thickness options available(Fahrenheit degree): 0.5 TOG (75-80 ), 1 TOG (68-75 ), 2.5 TOG (61-68), 3.5 TOG (57-61).