# Niftii Kids Vented Bike Helmet, 54–59 cm

The Niftii Vented Helmets kids bike helmet is listed with an adjustable fit for 54–59 cm head circumferences, a vented design and a polycarbonate outer shell. Its listed fit range is more useful than the broad age guidance, so measure the child’s head before choosing it.

- [Original product page](https://bargainpostbox.co.uk/product/niftii-kids-vented-bike-helmet-54-59-cm)
- [View offer](https://bargainpostbox.co.uk/visit/niftii-kids-vented-bike-helmet-54-59-cm)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: Niftii
- Model: Niftii Vented Helmets
- Category: Sports & Outdoors > Cycling > Cycling Helmets
- Price: 15.99 GBP
- Previous price: 29.99 GBP
- Discount: 47%
- Price checked: 2026-11-13T06:03:53.375Z
- Rating: 5 / 5
- Reviews: 1

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- The listing specifies a 54–59 cm head fit and an adjustable rear dial and strap.
- Vents are intended to encourage airflow during rides and other active use.
- The listing describes use for cycling, scootering, skateboarding and roller skating.
- The outer shell is listed as polycarbonate, and the listed weight is 337 grams.

## Pros

- The stated head-circumference range gives a practical measurement to compare against a child’s fit.
- Rear-dial and strap adjustment allow fit adjustments beyond the one-size label.
- The listed activities extend beyond cycling to several wheeled sports.

## Specifications

### Identity
- Brand: Niftii
- Model: Niftii Vented Helmets
- Colour: Pink
- Age range: Kid
- Size: One Size
### Fit and construction
- Head fit and features: 54–59 cm Head Fit, Adjustable Rear Dial and Strap, Multisport Use, Ventilated Design
- Outer material: Polycarbonate \(PC\)
- Recommended use: Cycling
### Dimensions and installation
- Dimensions listed: 16 x 28 x 22 centimetres
- Weight listed: 337 Grams
### Other details
- Country of origin: China
- Included components: Vented Helmet

## Before you buy

- The title and feature copy suggest ages 5–15, while the specifications list only “Kid” and the description says approximately 5–15 years. Treat the age range as guidance and measure head circumference. The description also calls the size Medium while the details list One Size, and the main listing does not establish a safety certification. Verify fit and any required certification before buying.

## In the box

- Vented helmet (Included)

## A good fit for

- Children whose measured head circumference falls within the listed 54–59 cm range.
- Families looking for a vented helmet described for cycling and other wheeled activities.

## Less suited to

- Children whose head circumference is outside the listed 54–59 cm range.
- Buyers who require a stated safety certification, as none is established in the supplied main listing.

## Frequently asked questions

### What head size does the helmet fit?
The listing gives a 54–59 cm head fit. Measure the child’s head and use that range rather than relying on age alone.
### Can it be used for activities other than cycling?
The listing describes it for cycling, scootering, skateboarding and roller skating.
### Does the listing establish a safety certification?
No safety certification is stated in the supplied main product details. Check the selected listing if certification is a requirement.
### What is included?
The listed component is one vented helmet.

## Alternative options

- [Niftii Kids Bike Helmet and Knee Elbow Wrist Pads Set for Boys and Girls \| MULTI-SPORT PROTECTION – EN 1078 certified helmet, impact-absorbing EPS foam, breathable design and adjustable fit.](https://bargainpostbox.co.uk/visit/niftii-kids-vented-bike-helmet-54-59-cm)
- [Toddler Bike Helmet, Adjustable Lightweight Kids Helmet for Boys & Girls Aged 1–5, Scooter & Tricycle Helmet for 2 3 4 5 6 Year Olds](https://bargainpostbox.co.uk/visit/niftii-kids-vented-bike-helmet-54-59-cm)
- [Kids Bike Helmet for Boys & Girls 3-15 Years, Adjustable Lightweight Helmet with 18 Vents, Toddler Child Multi-Sport Safety Certified Helmet for Bicycle, Scooter, Skateboarding 48-58CM](https://bargainpostbox.co.uk/visit/niftii-kids-vented-bike-helmet-54-59-cm)
- [Besttravel Kids Helmet, Toddler Helmet Adjustable Toddler Bike Helmet Ages 3-8 Years Old Boys Girls Multi-Sports Safety](https://bargainpostbox.co.uk/visit/niftii-kids-vented-bike-helmet-54-59-cm)
- [LeapBeast Kids Bike Helmet Age 3-13, Multi-Sport Children Helmet \| Boys Girls Kids Helmet, Lightweight, Removable Visor, Adjustable Child Safety Bicycle Helmet for Cycling Scooter Skating](https://bargainpostbox.co.uk/visit/niftii-kids-vented-bike-helmet-54-59-cm)
- [C-Preme Raskullz Child Helmet T-Rex Bonez Mohawk 50-54cm, 5+ Years \| T-Rex Bonez Helmet, Durable Shell, Mohawk Design and Secure Fit System](https://bargainpostbox.co.uk/visit/niftii-kids-vented-bike-helmet-54-59-cm)
- [Toddler Bike Helmet, Adjustable Lightweight Kids Helmet for Boys & Girls Aged 1–5, Scooter & Tricycle Helmet for 2 3 4 5 6 Year Olds](https://bargainpostbox.co.uk/visit/niftii-kids-vented-bike-helmet-54-59-cm)
- [Kids Bike Helmet for Boys & Girls 3-15 Years, Adjustable Lightweight Helmet with 18 Vents, Toddler Child Multi-Sport Safety Certified Helmet for Bicycle, Scooter, Skateboarding 48-58CM](https://bargainpostbox.co.uk/visit/niftii-kids-vented-bike-helmet-54-59-cm)
- [Niftii Kids Bike Helmet and Knee Elbow Wrist Pads Set for Boys and Girls \| MULTI-SPORT PROTECTION – EN 1078 certified helmet, impact-absorbing EPS foam, breathable design and adjustable fit.](https://bargainpostbox.co.uk/visit/niftii-kids-vented-bike-helmet-54-59-cm)
- [Kids Bike Helmet with Light 50-58cm, Kids Helmet Age 3-14 \| Boys Girls Child Bike Helmet,Multi-Sport Children Helmet for Bicycle Scooter Skating Cycling,Removable Visor,Lightweight](https://bargainpostbox.co.uk/visit/niftii-kids-vented-bike-helmet-54-59-cm)
- [Toddler Bike Helmet for 1-3 Year Olds - Adjustable Baby Infant Kids Bike Helmet for 1-3/2-3/3-5 Boys & Girls - Safety Certified for Bicycle, Scooter & Skateboarding](https://bargainpostbox.co.uk/visit/niftii-kids-vented-bike-helmet-54-59-cm)
- [tadpole Kids Helmet, Kids Bike Helmet Age 3-13, Adjustable Helmet 50-58cm](https://bargainpostbox.co.uk/visit/niftii-kids-vented-bike-helmet-54-59-cm)

## Images

![Niftii Kids Vented Bike Helmet, 54–59 cm — 1](https://bargainpostbox.co.uk/i/LdfAnmRDiBeEYPQN-OMEsp1T7djSwRAxpYkZAEgrB-HCEqTMbrm2uQDK-0rE3c6DirluFPZdAdb4ulmxji2CUU1TObSOCo1SFUovpLijCjJM6kY3akWECFtp.jpg)

![Niftii Kids Vented Bike Helmet, 54–59 cm — 2](https://bargainpostbox.co.uk/i/bUeVRZsJ1nviCYsqPNk2Pe5H_U0o0rXd-nzF-zKuLYY_yOU54oSlGmwqqexiCIas1lfvqQR--_vblIM5a2qj2Dy5X4Tpjm4GUzQDLZLCA-ndo0pvKBgVLOA-.jpg)

![Niftii Kids Vented Bike Helmet, 54–59 cm — 3](https://bargainpostbox.co.uk/i/zGALfyaKJUcXubuwuqxTVnt62VyUMmPv2JBa1BFazSFymM9PIwKh5Fz8oiYb9cbs_eVa_RsSEm3oTBfipBmcGjmkP5xy9RfKEu2Ry_hSluvURW2TgEWEC2l9.jpg)

![Niftii Kids Vented Bike Helmet, 54–59 cm — 4](https://bargainpostbox.co.uk/i/OKvanybRgNvnqX_XC5JXPuvs6D6tNAebnZcMCXhTRMyRfdIU8jyoExVdXaIS4DGqTc3eOmp06TjqvjISODez0olIe0VSibzBSSowsVSMDgBTvXGJpFpOBO-6.jpg)

![Niftii Kids Vented Bike Helmet, 54–59 cm — 5](https://bargainpostbox.co.uk/i/9KsuMKzb65Ez3uxG6XQp11kjKOBmmeTUXfAvFM4QWTmCyECYdSx9b1hSXlfynRibax55D4RW8NTkqXqORwRhQfosOGhwwA16bHuJSVNMf6fuPhtRfLaKhHMh.jpg)

![Niftii Kids Vented Bike Helmet, 54–59 cm — 6](https://bargainpostbox.co.uk/i/2UHl15hB0P-1WCWeDUGqRhWb_bzyHuojMGPd0FP1YsPstw4Yn1Q9-gyxkcysoJY93YytD-3y-f1ioj_U4OGpbRYkdL9pGgFScCUauabe6nMpvfxrlGDQiJTu.jpg)

![Niftii Kids Vented Bike Helmet, 54–59 cm — 7](https://bargainpostbox.co.uk/i/kpt2NQiHbdNI5uonu3rFLinoacc1MXAXZb0noZ1X1KtDjrERfNjMK4DvIkofjiWHwIa91WguA6b4uVFgUPMgGVyb94kSwpP9aj-vmYgPn7RD8gqZQN-iq-cr.jpg)