Tried halo and other various swaddles. This is the only one that allows some arm movement for a baby that loves to actually sleep hands out, but I can keep his arms tucked in! He wiggles but doesn’t get upset because he can still move his arms enough. The neck line is perfect and not too wide so when he tries to break out it doesn’t go over his face like the halo and other sleep sacks had. This also mitigates the startle reflex. Baby started sleeping longer stretches (10+ hours) with this swaddle. I bought three more, two being the transitional swaddle. Also, the halo and other sleep sacks didn’t have good material. This material is soft, super durable, definitely had the highest quality and will hold up really well with many washes and stains!!! Love it love it, wish I bought it sooner.