Best Harness Booster Seats

Graco Junior Maxi i-Size R129 Highback Booster car seat with cupholders, Suitable from 100-150cm (approx. 3.5 to 12 years), Midnight fashion

Maxi-Cosi Titan Car Booster Seat, 9‑36 kg, 9 Months-12 Years, Multi-Age Baby Car Seat, ISOFIX Car Seat, Top-Tether, Headrest/Harness Adjustment, 5 Recline Positions, Cushioned Inlay, Basic Black

Maxi-Cosi Titan S Comfort i-Size, Breathable Comfort Fabrics, Child Car Seat, 15 months-12 years (76-150cm), ISOFIX Car Seat, 5 Recline & 13 Headrest Positions, G-CELL Protection, Authentic Black

Jovikids I-Size Portable Booster Seat for Car with ISOFIX, 125-150cm (Group 2/3, 3-12 Years) for Kids, Comfortable, Compact, Convenient for Everyday Use, Great for Travel, ECE R129, Pink

Mamas & Papas Baby Bug Booster Seat for Dining, Detachable Tray, Harness, Adjustable Seat and Non-Slip Feet, Clay

Cozy N Safe Logan Group 1/2/3 Car Seat 9-36kg, 9 Months to 12 Years, 5 Point Harness, Forward Facing, Side Impact Protection, Adjustable Headrest, Lightweight, Child, Toddler Car Seat - Black/Grey

Cosatto Zoomi Car Seat - Group 1 2 3, 9-36 kg, 9 Months-12 Years, Forward Facing, Unicorn Land

Kinderkraft Car Seat Comfort UP, I-Size Booster Child Seat, with 5 Point Harness, Adjustable Headrest, for Toddlers, Infant, Group 1/2/3, 9-36 Kg, Up to 12 Years, Green

Graco Energi i-Size R129 ISOFIX/Top Tether Harness Booster 76-150cm (15 Months to Approx.. 12 yrs). Harness Mode 76-105cm (15 Months to 4 yrs), Highback Booster Mode 100-150cm (3.5 to 12 yrs), Meteor

Graco Eldura R129 Harness Booster (76-145cm - 15 Months to Approx. 12 Years). Harness mode from 15 months to approx. 4 Yrs (76-105cm), Highback mode from approx. 3.5 to 12 yrs (105-145cm), Midnight