It is not safe to let a baby sleep in a crib without a bumper because they are able to get their legs, arms, feet, and hands stuck in-between the rails of the crib. But it also is not safe to let a baby sleep in a crib with a bumper pad due to the possibility of suffocation. So what are we as parents supposed to do? Well thanks to SavvyBaby we now have the answer. This crib bumper is made of polyester breathable mesh making it safe to use. Since it is made of mesh it allows the passage of air reducing the possibility of suffocation. Not only is this safe for our little ones it is also very easy to attach to the crib. It fits perfectly in my sons crib and it is held on with velcro and ties. I have been using this with my 4.5 month old and it works perfectly, I could not be happier!