婴幼儿纯棉睡袋 - Rotobaby. 多尺码可选，适配 0-3 个月、3-6 个月、6-12 个月、12-18 个月、18-24 个月宝宝 Baby Cotton Sleep Sack - Rotobaby. This sleep sack covers multiple sizes: 0-3 months, 3-6 months, 6-12 months, 12-18 months and 18-24 months