Park & Diamond foldable bike helmet looks and feels like a baseball cap

Stylish Bike Helmet

Most cyclists who died in a car accident were not wearing a helmet. When one of the founders of Park & Diamond's sister was hit by a car while riding her bike, they decided to create a helmet that's not only safe but one that looks good enough that cyclist would want to wear it.

And so the Park & Diamond collapsible baseball cap helmet was created. It's perfect for people who don't like the look of traditional bike helmets. 

The unique look of the helmet itself, even though some people may not consider stylish, might still encourage people to wear it. But there are factors that make this helmet desirable, which is proven by the fact that they garnered almost $3 million of funding on Indiegogo.

The baseball cap part of the helmet is removable and can be swapped with one of different color or perhaps one day of a different style.

Folding the Park & Diamond helmet

It's packable

The Park & Diamond helmet is foldable and packs down to the size of a water bottle, albeit a large one, but it's still easier to fit in a bag than a traditional bike helmet. It will not fit inside your pants pocket.

Packed Park & Diamond Baseball Cap helmet

It's comfortable

Other than good looks, another way to make people wear helmets while cycling is to make them comfortable to use.

The inside of the helmet is covered with breathable and washable mesh fabric that feels good on the skin and dissipates heat from your head.

At just 8 ounces, it won't even feel like you're wearing a safety helmet.

Safer than traditional bike helmets

Even though the Park & Diamond helmet is nearly as thin as a baseball cap, it meets the U.S. CPSC and EU EN-1078 cycling safety standards.

In fact, the baseball cap helmet absorbs and dissipates energy significantly better than traditional bike helmets by up to 3 times.

This is all thanks to the helmet's proprietary energy dissipating composite shell made up small geometric elements that work together to absorb energy on impact.

Safety Test comparing traditional helmet to baseball cap helmet


  • Lightweight
  • Comfortable
  • Stylish
  • Foldable
  • Surpasses safety standards
  • Washable


  • Indiegogo campaign
  • Not shipped yet


If you're looking for a stylish, lightweight, comfortable and packable helmet that meets the safety standards in the US and UK, the Park & Diamond baseball cap collapsible helmet is perfect for you.

Update: The Park & Diamond folding helmet was successfully funded on Indiegogo with over $3 million in funding back in 2018. Unfortunately, they still have not delivered on their promise. It is likely that the product and the company is a scam.

[tcb-script src=”//”][/tcb-script]

Scroll to Top