✔ 2.5 TOG FOR ALL YEAR ROUND USE: Suitable for standard nursery temperatures of 16-20c (61-68f). (UNDERARM POPPERS ON SIZE 0-6 MONTHS) ✔ EASY NIGHT TIME CHANGES: Double Front YKK zip on all sizes with Reverse YKK zip for easy night time changes. ✔ EXCEPTIONAL QUALITY SUPER SOFT 100% JERSEY COTTON FABRIC: 100% jersey cotton outer and inner lining, Machine washable and can be tumble dried on low heat. ✔ SAFETY ASSURED: Snoozebags are rigorously tested to comply with British Safety Standard (BS 8510:2009) to ensure peace of mind and a safe sleeping environment. ✔ NO MORE LOOSE OR KICKED OFF SHEETS OR BLANKETS: Snoozebag sleepsacks bags provide a cosy and safe environment for your child to snooze in which means more sleep for your child and for you!