Product Price Weight (lbs) Height Limit (inches) Weight Limit (pounds) Seat Width (inches) Booster Backrest Height (inches) Harness System
Chicco Fit3x ClearTex
US
£170.13 21.0 lbs 43 in rear-facing; 54 in forward-facing; 44-57 in booster 5-40 lbs rear-facing; 26.5-65 lbs forward-facing; 40-100 lbs booster 16.7 in 20 in No-rethread harness

The Chicco Fit3x ClearTex is an ultra-slim all-in-one car seat measuring 16.7 in wide, designed to fit three seats across. It supports rear-facing, forward-facing harness, and high-back booster use, with ClearTex flame-retardant-free materials, six recline positions, and Mini-Grip LATCH connectors.

★ Ideal for

It suits families seeking a 3-in-1 seat for rear-facing installation because it supports rear-facing use from 5-40 lbs and up to 43 in, includes LockSure belt lock-offs and Mini-Grip LATCH, and provides a 16.7 in profile for fitting three seats across.

Evenflo All4Stages Slim
US
£170.13 24 17-60 in 4-120 16.9 in 5-point no-rethread harness

The Evenflo All4Stages Slim is a narrow 4-in-1 car seat for rear-facing, forward-facing, high-back booster, and backless booster use. Its 16.9 in width supports three-across configurations, while the 12-position headrest and no-rethread harness accommodate children from 4 to 120 lb.

★ Ideal for

It suits rear-facing installation followed by booster use because it supports rear-facing from 4-40 lb and 17-43 in, then converts to a high-back booster for 40-100 lb and 44-57 in, with a no-rethread harness and 16.9 in slim width.