My first attraction to this bottle was the fact that it is glass and not plastic. I Don't have to worry when my baby is drinking from it, which is daily. The strength of the glass is amazing it's been dropped several times and hasn't cracked. My son loves drinking from this bottle. I'm sure it's because there's an adorable dinosaur on the actual bottle which he loves to point at. The Dino squeaky tether is a great bonus to the set. I would definitely reccomend the go glass bottles to any moms out there. I've been very pleased with this company's bottles and service to their customers. Also have to say the new tops that snap on are a great improvement!