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The Kumla sleep bag combines a 100% cotton muslin outer and cotton lining with a polyester-padded fill rated at TOG 3.5, providing warmth adaptable to varying temperatures. Its long sleeves attach via press studs and can be removed entirely, while press-stud shoulders and a full-length side-and-bottom zip allow straightforward dressing. The crew neck is constructed to meet NF EN 16781 (February 2020) safety standards, with a controlled opening width to prevent slipping and regulated padding thickness to guard against overheating. Available in three sizes covering heights from 50–65 cm to 81–94 cm, with corresponding sleep bag lengths of 70 cm, 85 cm, and 105 cm. The fabric holds OEKO-TEX® Standard 100 certification and is machine washable at 60°C.
