I absolutely love these bonding bags. These bonding bags do have a removable strap which works great fo me as when I travel with my little ones I can remove the strap and click them into my travel cage. Not only is the strap removable but the strap is adjustable, I’m a shorty so this feature comes in real handy for me. The quality of the material is fantastic. Nice soft fleece on the inside, the screen window is much more durable then other bonding bags I have purchased elsewhere. These have hidden seems on the inside and perfectly straight tight stitching on the outside. These bonding bags are very well put together and I can see that these will probably last for a very long time. I would definitely recommend this product to anyone and am very confident to say you will love these too.