Patented 4-way Zip Design - The ONLY sleep sack with convertible legs perfect for car seats & strollers. Our exclusive zipper system (US-UK Patent) works with 5-point harnesses, eliminating dangerous loose blankets during travel. Seamlessly transition from car to crib without waking baby - a game-changer for active families. Takes the Guesswork Out of Safe Sleep Temperature: What is TOG? Think of it as a warmth rating, like your comforter. 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). Refer to our What to wear guide for safe dressing options. Supports Safe Movement & Sleep: In ‘legs’ mode, provides greater stability for adventurous toddlers. Compatible with 5-point harnesses, making it ideal for stroller naps and sleep on the go. Soft, Premium & Gentle on Skin: Made from GOTS-certified organic cotton with non-toxic water-based dyes. Gentle on sensitive skin and approved by the Eczema Association of Australasia as a skin-friendly product. Practical Details Parents Love: Includes a free room thermometer and “What to Wear” guide to help dress your child correctly. Designed to be worn over pajamas, with durable fabrics and easy zip access for quick nighttime changes.