Stays put, even with kids constantly jumping in and out of the water. The Evoprene fabric outer shell holds up well, and the ultra-light interior lining doesn t bother the kid's skin. Not bulky, so it s easier for kids to move, swim, and play without fussing. Buckles feel strong, and the leg strap adds extra security without being uncomfortable. The grab handle on the top comes in handy more than expected. Approved by Uscg and Transport Canada, so it meets the safety marks parents look for. Good choice for lakes, pools, or anywhere kids are around water.