The Woolino 4 Season Baby Sleep Sack is a high-quality sleeping bag made of 100% Merino Wool Lining and 100% Organic Cotton Outer. It is designed to keep babies warm and comfortable throughout the year, with a temperature regulating feature that adjusts to the baby's body temperature. The sleeping bag is manufactured by Woolino, a reputable brand in the baby products industry. It weighs 1.28 pounds and comes in a Sheep color. The package dimensions are 12.56 x 10.67 x 2.13 inches.