Opened, but the child didn't like it and wouldn't wear it, so it's in unused condition. Color: Yellow Bee, Improved String Version Item Weight: 0.18 kilograms Material: Cotton It was 2480 yen on Amazon. ✅【Improved Strings】【Adjustable Size】The shoulder strap belts can be freely adjusted to match the baby's growth. The strings are covered with soft cloth, reducing the burden on the baby. Also, the durability of the strings has been improved, making them less likely to break. Generally, it can be used from around 6 months old, when the baby starts to sit up, to around 2 years old, when walking becomes stable. Also, there is a drop-prevention belt, which secures the backpack more firmly for peace of mind. 【How to use the drop-prevention belt】step1: Remove the shoulder strap (the shoulder strap of the backpack body) from the length adjustment buckle. step2: Pass the shoulder strap through the buckles on both sides of the drop-prevention belt. step3: Pass the shoulder strap through the length adjustment buckle again. step4: After the baby wears the backpack, secure it with the buckle or Velcro of the drop-prevention belt. 【Size of the fall prevention backpack】35cm x 19cm, thickness 5.5cm or more (head part) ✅【Thoroughly Absorbs Impact】 Babies who have started to stand and walk really need constant supervision. Even if you don't take your eyes off them, they tend to bump their heads when they fall. If the baby hits their head hard, it can be serious, so how about a fall prevention backpack as insurance? The thick padding of 4.5cm or more absorbs impact thoroughly. ✅【Mesh Material for Excellent Breathability! Lightweight and Doesn't Burden】 Mesh material suitable for spring, summer, and autumn. No more sweaty backs! The body is also lightweight at 160g, so it doesn't burden the child when worn. ✅【Above all, it's cute】 This is a bee backpack that became famous for its cuteness in a certain CM. Parents will be unable to stop smiling as their already cute baby becomes one with the bee. Perfect for celebrating when they can sit up, stand, or walk! It's also sure to be Instagrammable.