Got this swim jacket for my son as a step up from the level below this speedo swim jacket.  We purchased the first speedo jacket to help him get comfortable in the water and since he has taken swim classes and loves the water.  With moving him into this swim jacket, he now swims freely around the pool without any movement restrictions and this jacket allows him to get into every swim position without bobbing him up and down.  He still has the safety and confidence of not going under but is allowed lots of movement and freedom while still building strength and confidence.  I highly recommend this jacket.