Thank you for viewing. Swaddle Up Transition Bag Original Stage 2 M size This type has detachable arms. Purchased from the official website and used for about 4 months. My baby slept well in this, and it was very helpful. The neck area is slightly yellowed, and there is some wear and tear, but it is still usable. Please check images 8 and 9. Please understand that this is a used item. Thank you!