Best High back Booster With Harness

Britax One4Life ClickTight All-in-One Car Seat – 10 Years of Use – Infant, Convertible, Booster – 5 to 120 Pounds - SafeWash Fabric, Cadet

10 years of use: New one4life convertible to booster car seat grows with your child from 5 to 120 pounds & up to 63 inch tall.
Install confidently: With ClickTight installation, you'll know it's right in 3 easy steps.
One4life: Converts from rear facing infant car seat, to forward facing 5 point harness, to high back belt positioning booster.
Britax safety: High strength steel frame, crumple zone help absorb crash energy and patented v-shaped tether.
Full body protection: 2 layers of side impact protection surround the head, neck & torso.
Premium comfort: Built-in arm rests, cooling channels and ventilated mesh.
Parent convenience: Safe wash cover is safe to machine wash & dry and naturally flame retardant.
Dishwasher safe cup holders are easy to clean.
Perfect fit: 15 position headrest & harness adjust together with one-hand.

2 Modes – Converts to Booster: Forward-facing Harness to Belt-Positioning Booster supports children 22-110 lbs.
5-Point Harness with 50 lb. Limit: Holds child’s body safely and securely in car seat.
Up-Front Harness Adjust: Central, front access to harness adjuster provides an easy way to adjust child’s harness for an accurate, snug fit.
Shoulder Belt Guide: Automatically positions the vehicle belt in the proper position for your child.
Dual Cup Holders: Two built-in cup holders keep drinks and snacks within reach – allows driver to stay focused on the road.

Trusted quality, upgraded design: Looking for pioneer? Grow with you is our newest harness to booster car seat.
2 in 1 booster seat: Easily transitions from forward facing harness mode to belt positioning booster mode as your child grows from toddler to big kid.
Premium fabrics: Nap friendly padding and fabrics for superior comfort & a quiet ride. Headrest Fully Extended Height: 35.5 inch.
More comfort: Soft comfort pads keep your child's neck from rubbing against the harness strap. Gender - unisex.
Surrounded in safety: 2 layers of side impact protection, steel frame, impact absorbing base and forward movement reducing V-shaped tether.

3-in-1 CAR SEAT: Rear-facing with harness: 5-40 lb.
HAPPY PLANET COLLECTION: Fabrics made with recycled materials as part of our Do More promise to Recycle, Reimagine, and Give Back.
SLIM, SPACE-SAVING DESIGN: It's a back seat space savior.
NO STRAP STRUGGLE: No-rethread harness system.
one-hand, 6-position headrest and harness adjust together.
6-POSITION RECLINE: 3 rear-facing and 3 forward-facing positions for the right install.
KEEPSAFE PROTECTION: Designed and tested to help provide safe and secure protection so you can focus on the road ahead.
SIDE-IMPACT PROTECTION: Side-impact tested for occupant retention with the built-in 5-point harness system.

TRUSTED QUALITY, UPDGRADED DESIGN: Looking for Frontier. Grow with you ClickTight is our newest harness to booster car seat.
PREMIUM, SOFT TOUCH FABRIC: 4-way stretch athleisure fabric combines style and function for a modern look that’s easy to clean.
2 in 1 BOOSTER SEAT: Easily transitions from forward facing harness mode to belt positioning booster mode as your child grows from toddler to big kid.
INSTALL CONFIDENTLY: With ClickTight, you know it’s right in just 3 easy steps. Open, thread & buckle, close.
MORE COMFORT: Stay put, soft comfort pads keep your child's neck from rubbing against the harness strap.
Britax strongly recommends that children should be secured with a harness system until, they exceed the weight or height limits specified..

One4life: Converts from a rear facing infant car seat, to a forward facing 5 point harness seat, to a high back belt positioning booster seat.
10 years of use: One4life convertible to booster car seat grows with your child from 5 to 120 pounds and up to 63 inch in height.
Full body protection: 2 layers of side impact protection surround your child's head, neck & torso.
Britax safety: Patented v-shaped tether, high strength steel frame and crumple zone absorb crash energy to help keep your child safe.
Install confidently: With ClickTight installation, you'll know it's right in 3 easy steps.
Premium comfort: Built in armrests, cooling channels and ventilated mesh.
Parent convenience: Safe wash cover is safe to machine wash & dry and naturally flame retardant.
Dishwasher safe cup holders are easy to clean.
Perfect fit: 15 position headrest & harness adjust together with one hand.

Trusted quality, upgraded design: Looking for frontier. Grow with you ClickTight is our newest harness to booster car seat.
Install confidently: With ClickTight, you know it’s right in just 3 easy steps. Open, thread & buckle, close. Shoulder width: 12 inch.
2 in 1 booster seat: Easily transitions from forward facing harness mode to belt positioning booster mode as your child grows from toddler to big kid.
Premium, soft touch fabrics: 4-way stretch athleisure fabric combines style and function for a modern look that’s easy to clean.
More comfort: Stay put, soft comfort pads keep your child's neck from rubbing against the harness strap. Seating compartment height - 23.5 inches.

Trusted Quality, Upgraded Design: Looking for Frontier. Grow with you ClickTight is our newest harness-to-booster car seat.
2-In-1 Booster Seat: Easily transitions from forward-facing harness mode to belt-positioning booster mode as your child grows from toddler to big kid.
Install Confidently: With ClickTight, you know it's right in just 3 easy steps: open, buckle, close.
Stay Clean: Nanotex Technology resists stains, moisture and odor to keep life's little messes your little secret.
Britax Safety: High strength steel frame & crumple zone help absorb crash energy.

3 Modes in 1 Seat: Accommodates children from 5 - 110 lbs - Rear Facing, Forward-Facing Harness and Belt-Positioning Booster.
5-point harness tested to a 65 lb weight limit: Allows longer harness use until child is ready for belt-positioning booster.
No Rethread Harness: easy-to-slide harness straps enable proper fit during each ride and as child grows- without uninstalling the car seat.
Adjustable Head Rest: One-hand adjustable head rest grows with your child.
Dual Cup Holders: Two built-in cup holders keep drinks and snacks within reach - allows driver to stay focused on the road.

Trusted quality, upgraded design: Looking for pinnacle. Grow with you ClickTight plus is our newest harness to booster car seat.
Install confidently: With ClickTight, you know it’s right in just 3 easy steps. Open, thread & buckle, close.
2 in 1 booster seat: Easily transitions from forward facing harness mode to belt positioning booster mode as your child grows from toddler to big kid.
Premium, soft touch fabrics: 4-way stretch athleisure fabric combines style and function for a modern look that’s easy to clean.
More comfort: Stay put, soft comfort pads keep your child's neck from rubbing against the harness strap.