O'Brien Flex V-Back Life Jacket for Kids - Blue/Lime, Size 35-55 lbs, CGA/USCG-Approved, Adjustable Fit

O'Brien Child Flex V-Back is a harmonized U.S. Coast Guard/Transport Canada approved life jacket designed to give children secure flotation with maximum freedom of movement.

Built from a softer, lighter BioLite outer material and modeled on O'Brien's popular adult V-Back, this youth-sized life jacket balances safety and comfort for kids 35 to 55 pounds. Its segmented construction, split V-back stretch panel and wide armholes let children paddle, swim and play without feeling restricted, while a full front zipper, two concealed adjustable belts, a grab strap and leg loop strap deliver dependable retention and easy adjustment.

How does the Flex V-Back let kids move more freely in the water?

The jacket's design prioritizes unrestricted motion through segmented panels and a stretch V-back that follows a child's torso and shoulder movement. Wide arm openings reduce rubbing and allow a full range of paddling and throwing motions, making it suitable for watersports and active play.

• Split V-back stretch panel increases shoulder mobility.
• Segmented foam panels conform to a child's shape for natural movement.
• Wide armholes prevent chafing and enable full arm rotation.

What features help parents get a safe, secure fit quickly?

Entry and fit were designed for convenience: a full-length front zipper gets the vest on fast, while two concealed adjustable belts let caregivers fine-tune the fit without bulky straps dangling. A grab strap and leg loop strap improve retention and make handling easier during rescues or transfers.

• Full front zipper for fast on/off.
• Dual hidden adjustable belts provide a snug, streamlined fit.
• Grab strap and leg loop strap add retention and handling support.

Why choose BioLite outer material instead of traditional neoprene?

BioLite delivers a soft, comfortable feel like neoprene but is lighter and dries faster, reducing weight on the child and minimizing soggy fabric after use. The material still provides cushioning and durability appropriate for frequent water activity, while improving overall comfort for extended wear.

• Lightweight construction reduces dragging while swimming.
• Faster drying for less water retention between uses.
• Soft feel enhances comfort during long sessions on the water.

What sizes and activities is this life jacket best suited for?

This model fits children weighing 35–55 pounds and is intended for a wide range of recreational water activities where a CGA/U.S. Coast Guard approved PFD is required or recommended. It's appropriate for boating, paddle sports, swimming practice and other waterside play when active movement and secure flotation are both priorities.

• Size range: 35–55 pounds, youth fit.
• Approved by U.S. Coast Guard and Transport Canada for personal flotation.
• Good for boating, paddleboarding, watersports and general water play.

Who is this for: Families and caregivers who need a certified youth life jacket that doesn’t limit activity will appreciate the O'Brien Child Flex V-Back. It's aimed at active children who require reliable flotation but still want to swim, paddle and move freely; it's also useful for parents and rental operations that need a durable, easy-to-adjust vest for frequent use.