First Sleep Sack After Swaddling: Designed for arms-out sleepers, this jersey sleeping bag features a slim-fit top that mimics the snugness of a swaddle, helping baby feel secure while allowing natural arm movement. Choose the Right TOG for Safe Sleep: Temperature-matched for year-round comfort with 4 TOG ratings (warmth levels): 0.2 TOG (71 °F +/ 22 °C +), 1.0 TOG (67–75 °F / 20–24 °C), 2.5 TOG (59–69 °F / 16–21°C), and 3.5 TOG (53–65 °F / 13–19 °C). Eliminates loose blankets while maintaining the temperature for safe sleep. Refer to our What to wear guide for safe dressing options. Soft, Durable & Gentle on Skin: Made from high-quality organic cotton with a touch of stretch for comfort, and dyed with non-toxic, water-based dyes. Machine washable and designed to get softer with every wash, each piece is made to last through multiple children while remaining gentle on sensitive skin. Approved by the Eczema Association of Australasia as skin-friendly. Promotes Healthy Hip & Leg Development: Bell-shaped bottom allows hips and legs to move freely, supporting healthy hip development and reducing the risk of hip dysplasia, while the slim-fit upper provides a secure feel. Easy for Parents, Safe for Baby: Two-way zipper allows for quick nighttime diaper changes without fully undressing your baby. A protective zip cover prevents irritation and keeps delicate skin safe.