Baby and children's product retailers carry additional responsibilities that affect product data structure: safety standards must be surfaced clearly, age suitability must be accurate (both for development and for choking hazard warnings), and gift registries are a major acquisition channel. Getting this right during migration protects your customers and your reputation.

Baby and kids product categories

Nursery furniture: Cots, cot beds, moses baskets, nursing chairs, wardrobes, chest of drawers. Key specs: mattress size, adjustable base height, converts to toddler bed.
Prams and pushchairs: Travel systems, strollers, pram attachments. Key specs: fold type, weight, maximum child weight, car seat compatible.
Car seats: Group 0/1/2/3, i-Size (R129), ISOFIX. Safety standard metafield is legally important.
Feeding: Bottles, breast pumps, high chairs, weaning sets. BPA-free flag, steriliser compatible flag.
Clothing: Sleepsuits, vests, dresses, outerwear. Age/size range variants (Newborn, 0–3m, 3–6m, etc.).
Toys: Soft toys, ride-ons, construction toys, craft sets. CE/UKCA mark, minimum age metafields.
Baby monitors and safety gates: Safety-critical products needing compliance metafields.
Bedding and sleeping: Mattresses, duvets, sleeping bags. BSI/BS standard compliance.

Age range as a variant and metafield

Age suitability in baby and kids retail serves two different purposes:

Developmental sizing: Clothing sizes (Newborn, 0–3m, 3–6m, 6–9m, 9–12m, 12–18m, 18–24m, 2–3y…). Used as a Shopify variant option.
Toy safety minimum age: Products not suitable for children under a specified age (e.g., "Not suitable for under 3 years" for small parts choking hazard). Stored as a metafield, displayed prominently on the product page.

In WooCommerce, age ranges are typically stored as pa_age or pa_size attributes for clothing, and as a custom field for toys. k-sync maps clothing size attributes to Shopify variant options and captures toy age minimums in the normalized product's metafields.

product.metafields.baby.min_age_years = "3"        // Toy safety — not for under 3
product.metafields.baby.max_age_years = "8"         // Upper suitable age
product.metafields.baby.clothing_size_guide = "uk"  // UK, EU, or US sizing

Safety compliance metafields

Safety standards are not optional for baby and children's products. They need to be visible in product listings and structured in your data for potential compliance auditing.

Metafield	Example	Product type
baby.safety_standard	BS EN 1888 / BS EN 1130 / EN 71 / R129	Prams, cots, toys, car seats
baby.ukca_marked	true / false	All regulated products
baby.ce_marked	true / false	EU market products
baby.bpa_free	true / false	Feeding, bottles, teethers
baby.choking_hazard	true / false	Small-parts toys
baby.isofix_compatible	true / false	Car seats
baby.mattress_standard	BS 7177 (crib) / BS EN 16890	Mattresses
baby.latex_free	true / false	Teethers, dummies
baby.machine_washable	true / false	Bedding, soft toys, clothing
baby.max_child_weight_kg	15 / 22 / 36	Car seats, pushchairs

Gift registry and baby shower lists

Baby registries (gift lists) are a major acquisition channel for baby retailers. Expectant parents create a wishlist, share it with family, and guests purchase directly. In WooCommerce, this is typically handled by a plugin (e.g., YITH Gift Registry, WC Wishlists).

Shopify does not have a native gift registry. Options after migration:

Giftship app: Full gift registry functionality with shareable links, group gifting, purchased item tracking.
My Wishlist app: Simpler wishlists that can be shared via link.
Custom implementation: Using Shopify's Customer Metafields to store wishlists, accessible via Storefront API.

If you currently have WooCommerce wishlists/registries, these cannot be auto-migrated — the data structure is plugin-specific. Communicate the transition to customers before switching platforms.

Nursery furniture bundles

Nursery furniture is frequently sold as a bundle: cot + wardrobe + chest of drawers in the same collection/range. In Shopify:

Create a "Nursery sets" collection that groups products by range (tag: range:oxford-nursery).
Use a bundle product with a metafield listing component product handles: baby.bundle_components = "oxford-cot,oxford-wardrobe,oxford-chest-3-drawer".
A Shopify bundle app (e.g., Shopify Bundles, Bold Bundles) can offer the set at a discount.

During migration, WooCommerce grouped products (products linked together without a shared variant) map cleanly to this bundle pattern in k-sync's normalized data.

Mattress firmness and sleep safety messaging

Baby mattress firmness is a safety consideration (FSID safe sleep guidelines recommend a firm, flat mattress). Structure this clearly:

product.metafields.baby.mattress_firmness = "Firm"
product.metafields.baby.mattress_type = "Foam / Spring / Natural fibre"
product.metafields.baby.breathable_cover = "true"
product.metafields.baby.cot_size = "Cotbed / Standard cot / Moses basket"

Display safe sleep guidance (link to Lullaby Trust or NHS advice) on cot and mattress product pages via a Shopify section or metafield-driven content block.

Clothing size variants for children's wear

Children's clothing uses age-based sizing in the UK (unlike adult clothing which uses numeric sizes). The size run for a childrenswear product might be:

Newborn → 0–3m → 3–6m → 6–9m → 9–12m → 12–18m → 18–24m → 2–3y → 3–4y → 4–5y → 5–6y → 6–7y → 7–8y

In WooCommerce, this is a pa_age or pa_size attribute with these terms. During migration, normalise the term format: remove inconsistencies like "6-9 months" vs "6–9m" before pushing to Shopify. k-sync flags variant option value inconsistencies in validation for manual review.

Post-migration checklist for baby and kids stores

UKCA/CE mark metafield populated on all regulated products
Minimum age metafield present on all toys with small parts
Car seat safety standard (R129/ECE R44) visible on product pages
BPA-free flag on all feeding products
ISOFIX flag on compatible car seats
Mattress safety standard in metafield and safe sleep guidance linked
Clothing sizes consistent format across all variants (0–3m not "0-3 Months")
Gift registry app installed and landing page created before launch
Nursery range products grouped in collections by range name
Max child weight on pushchairs and car seats

Migrating a baby and kids store from WooCommerce to Shopify (2026)