Swaddle Up Transition Bag Bamboo Lite, size L, Stage 2. For babies 8.5kg to 11kg. The fabric is thinner than the Lite version, making it useful in the summer. Although it's size L, to wean my baby from the Swaddle Up, I intentionally used this looser L size when my baby was around 7kg, removing one arm at a time, and was able to wean smoothly. I used it for about 2 months. There is some wear and tear, and some stains, but I think it can still be used. It was difficult to put the sleeves on, so I took the photos as is. Thank you.