InnerKing 912 Adult Bike Helmet with Rear Light and OTG Goggles

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Product guide

InnerKing 912 Adult Bike Helmet with Rear Light and OTG Goggles

The InnerKing 912 adult bike helmet pairs a rechargeable rear light with detachable magnetic OTG-friendly goggles. Its adjustable fit is listed for medium and large head ranges, so measure your head and confirm the selected size before ordering.

At a glance

Detachable magnetic goggles are described as OTG-friendly and removable for different riding preferences.
The rechargeable rear light is specified with four modes. The listing describes it for visibility in traffic and low-light conditions.
The dial fit system is adjustable, with listed medium and large head ranges.
The helmet is listed with 17 air vents and a polycarbonate outer shell over expanded polystyrene.

Price

$29.98Save 19%

Reference price: ~~$36.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

Combines a rear light and detachable goggles with the helmet, reducing the need to source those features separately.
The listing gives explicit head-circumference ranges for two sizes to help with fit selection.
The rear light has four listed modes and a rechargeable battery.

Technical specifications

16 specifications

Identity
Brand	Innerking
Model	912
Age range	Adult
Color	White
Size	Medium

Dimensions and weight
Dimensions listed	10.63 x 7.87 x 6.69 inches
Weight listed	0.33 kg

Construction and features
Outer material	Polycarbonate (PC)
Inner material	Expanded Polystyrene
Listed special features	17 air vents, Adjustable Strap, Lightweight, Magnetic Goggles, Rear Light
Recommended use	Cycling

Fit and operation
Medium head range	21.65in–23.23in (55–59cm)
Large head range	23.23-24.82（59-63cm）
Rear light	4 lighting modes
Charging adapter instruction	ONLY USE STANDARD 5V/1A ADAPTERS.

Manufacturer-listed standards
Claimed standards	ASTM, CPSC, CE, and EN1078

What to know before buying

The listing identifies the selected size as Medium but also describes Large sizing. Measure head circumference and confirm which size is selected. The light is described as rechargeable without an included charging cable or runtime stated. Do not use a fast charger. The manufacturer specifies a standard 5V/1A adapter. Manufacturer safety-standard compliance is a listing claim, not independently verified here.

What’s in the box

Included

Cycling helmet
User manual ×1
Packaging bag
Goggles

Who is it for?

A good fit for

Adult cyclists seeking a helmet with an integrated rechargeable rear light and removable magnetic goggles.
Riders who can match their head circumference to the stated medium or large range and want an adjustable dial fit.

Less suited to

Buyers who need a verified fit outside the listed 55–63 cm range.
Buyers who require stated battery runtime or a confirmed charging cable in the package.

InnerKing 912 Adult Bike Helmet with Rear Light and OTG Goggles · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 616 ratings

5 stars84%84%
4 stars9%9%
3 stars3%3%
2 stars3%3%
1 star1%1%

Customer feedback highlights comfort, a lightweight feel, adjustability, fit, the rechargeable rear light, and sun protection. These impressions are relevant to the helmet’s adjustable fit and listed light and goggles, but they do not establish a fit for every head shape or verify lighting performance. Aggregate ratings are mostly five-star, with a smaller spread of lower ratings, so experiences are not uniformly positive.

Positive themes

Customer feedback describes the helmet as comfortable, lightweight, and not bulky.
Customers are reported to appreciate the fit adjustments, rear light, and sun protection.

Frequently asked questions

What head sizes does the listing specify?

It gives a medium range of 55–59 cm and a large range of 59–63 cm. The selected size is listed as Medium, so confirm the variant and measure your head before buying.

Are the goggles removable?

Yes. The listing describes the magnetic OTG-friendly goggles as detachable.

How many rear-light modes are listed?

The rechargeable rear light is described as having four lighting modes.

What charger does the manufacturer recommend?

The listing says to use a standard 5V/1A adapter and not a fast charger.