A correctly fitted head protector sits with its cushion ring between the shoulder blades — high enough to catch a backward-falling head, low enough to stay clear of the neck — with shoulder straps snug enough that two fingers fit underneath and a chest clip fastened at armpit height so the harness can't slip off during play.
Positioning the cushion
The protective ring should rest centered between the shoulder blades, not up on the neck and not down on the mid-back. Too high, and it can press uncomfortably against the neck during forward movement; too low, and it misses the head entirely during a backward tip. Slide the height adjuster until the top of the cushion sits roughly level with the base of the skull when your baby is upright.
Getting the strap tension right
Shoulder loops should be snug enough that the harness doesn't shift or ride up during crawling, but loose enough to slide two adult fingers flat underneath the strap at the shoulder. Too tight restricts movement and comfort; too loose lets the cushion migrate out of position exactly when a fall happens.
The chest clip
Fasten the chest clip roughly at armpit height — low enough to be comfortable, high enough that the harness can't be shrugged off over the shoulders. A one-handed clip design matters here in practice, not just convenience: fitting a squirming baby with a two-handed clip is where most parents give up and skip the harness on a given day.
Common fit mistakes
Leaving straps at the same setting as your baby grows — recheck fit every few weeks during rapid growth phases, particularly between 6 and 12 months. Fitting it over bulky clothing in winter and then finding it loose under a t-shirt in summer — refit seasonally, not just by age. Positioning the cushion too low, which is the single most common fit error and the one that most reduces actual head protection during a fall.
A quick fit check before each wear
Once positioned, gently tug the cushion upward and side to side — it shouldn't shift more than an inch in any direction. If it does, tighten the relevant strap before starting active play. This takes under 10 seconds once it's a habit and is worth doing every time, not just the first time.
Crawl & Cuddle
A soft head & back cushion for exactly this stage
190 g, breathable 3D mesh, adjustable from 5 to 24 months — built around the backward-fall pattern this article covers.
Shop all ten stylesFrequently asked questions
How do I know if the harness is too tight or too loose?
Two fingers should fit flat under the shoulder strap. If you can't fit one finger, it's too tight; if more than two slide in easily, it's too loose.
Where exactly should the cushion sit on my baby's back?
Centered between the shoulder blades, with the top edge roughly level with the base of the skull — high enough to catch the head, clear of the neck.
How often should I readjust the fit as my baby grows?
Check it every few weeks during faster growth phases (commonly 6–12 months), and refit seasonally when clothing thickness changes significantly.
