Frequently Asked Questions


CPSC & EN1078 officially safety certified. We've spent 2 years developing & putting our helmets through extensive impact testing.

Our helmets surpass official testing standards and is certified for use in the UK, US & EU. This means it is approved by government set standards.

Hey, we get it, a foldable helmet doesn't fill you with the greatest of confidence. But we've done our homework and our helmets have been put through hell.

Our helmet absorbs the forces on impact, yes even on the sides. This means that the helmet will deform, and you'll be protected.

The helmet achieves protection with a unique combination of materials. Protection is mainly provided by the EPS core (stuff that deforms), with its own unique density. The hard polycarbonate outer shell and soft inner padding also provide further protection and comfort.

It is also officially safety certified, CPSC & EN1078.

If you live in Australia or New Zealand, we won't be able to sell you our helmets. All other countries are fine.

In the future, we plan to add Australia & New Zealand to our safety roster.

Sizes, weight & airflow

Click here for our sizing guide.

We're a British startup based in London and we've just launched. So, we only have medium available at this moment (55cm - 58cm).

This captures most head sizes for both men & women. We're developing a full size range, which should be available in the next few months!

We will be introducing a kids range soon.

410 grams

Click here for helmet specs.

Yes, you'll be able to feel a breeze.

The helmet has 4 large air vent channels allowing air to flow over your head.

Eco-friendliness & recycling

We produce our helmets from recycled plastic.

We are work with a large car manufacturer in the US to reuse their plastic packaging material.

This plastic is then put through through a complex process turning it into a very strong material called EPS. This EPS is what is used in all helmets, so don't worry.

This eco-friendly EPS is tested against normal EPS and delivers the same level of safety.

Promoting eco-friendliness is our core mission. Click here to read more about us.

We use a full-wrap in-mold process which combines the EPS inner core of the helmet (which absorbs impact) with the outer polycarbonate shell. This produces the highest quality of finishes.

Rising pollution, congestion & strained public transport are issues we all face in cities. As population increases, we want to get more people on bikes & put less strain on the environment.

One of our core missions is sustainability. Click here to read more about us.

Why LID?

One of the major problems for city cyclists and commuters is what to do with their helmet when not wearing it. Some people don't wear one & others avoid cycling completely. 

Foldable helmets is our answer. The idea is that if you're helmet is foldable, you're more likely to bring it with you. We want to encourage safe riding & more riding overall.

Push in the sides, slide it in your bag and you're good to go.

You won't have to fiddle with confusing clips or latches.

Yes! All our helmets come with a rear clip-on light included.

Keeping you extra visible at night, the light has 3 settings of bright red flashes.

The light is USB rechargeable with any USB cable (USB cable not included).

No, not at the moment.

The colours are bold with sleek clean lines across the helmet. This combination of colour and pattern stands out for human eyes.

You'll grab attention easier, helping others be more aware of you on the roads.


A well-fitting helmet is a safer helmet.

You'll get a snug helmet, our unique design adjusts to your own head shape. It will also be more comfortable.

Not everyone has the same shaped head, so why should helmets all be shaped the same way?

Cycling is a fantastic way for you to cut costs on travel & get some great exercise. But there is more to it than that, our environment gets better with more of us cycling.

We're on a mission to get more people on bikes towards a more sustainable future. Our helmets are just the start of the LID brand.

Shipping, Returns & Warranty

Free worldwide shipping for helmets.

This includes order tracking.

Orders without helmets: Free UK, £10 EU, £15 Rest of the world.

Click here to read our Shipping & Returns Policy.

Our shipping time is 3 - 5 working days. Unfortunately we do not ship to Australia & New Zealand at the moment.

If you want faster shipping, order from our Amazon page and select your desired shipping time. Click here.

We also send confirmation emails when you place an order & after your order has been shipped.

We use Hermes Tracked for UK orders. For all other orders, we use DHL express.

Click here to read our Shipping & Returns Policy.

Ofcourse! If for any reason you're not 110% satisfied, you can return your purchase within 30 days of receiving it.

Click here to let us know you'd like to make a return.

Please note we do not offer free returns outside of the UK at the moment. So, please make sure you get the right size! Click here for our size guide.

Please keep the original packaging and labels attached. The safety booklet must be still attached to the helmet - if removed, we cannot accept the return.

Once we've received your helmet in good condition, we'll refund your order in full!

Please click here to read our Returns Policy. 

All purchased helmets have a one-year warrantyfrom the date of purchase, unless otherwise stated.

Click here for our warranty policy.

If you have been involved in an accident, we offer a 1 year replacement service. If your helmet has been damaged, you may get a 50% discount on your next order with us.

Click here for our replacement service program.

How to contact us

Email: (or)

Phone: Not available yet, sorry!

Live chat: Go to our facebook page, Click here.

Contact form: Click here

Sizing & Fit

Helmet sizing & fit guide

**Please note: Only medium size available at this moment. Please make sure it will fit you with our fitting guide below.** 

Get your size

Mobile phone cable & ruler method (video below)
1) Place your ruler on a table in front of you.
2) Use both hands and wrap your mobile phone cable around your head, just above your eyebrows.
3) Wrap until both hands meet at the back of your head.
4) Hold the points at which the cables meet and measure against your ruler.
5) Make a note of the measurement, this is your head size!

Measuring tape method (in video below too)
1) Wrap measuring tape around your head, just above your eyebrows.
2) Wrap until both sides of the tape measure meet.
3) Make a note of the point where the tape measures meet.
4) Make a note of the measurement, this is your head size!

Why do you only have one size?

We're a British startup based in London and we've just launched. So, we only have medium available at this moment (55cm - 58cm).

This captures most head sizes for both men & women. We're developing a full size range, which should be available in the next few months!


One size fits all.