![Allston Summer Liner w/ BOA (Barn Deal Liner)](http://bernhelmets.com/cdn/shop/files/Allston_Liner_No_Visor_34e9dbfe-35c5-4e12-b8e6-aa51b4e48b85_{width}x.png?v=1720326307)
Allston Summer Liner w/ BOA (Barn Deal Liner)
![](https://cdn.shopify.com/s/files/1/0027/9379/9739/files/product_image.png?v=1625660316)
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Reviews for Allston Summer Liner w/ BOA (Barn Deal Liner)
This replacement summer liner is made specifically for Allston and Morrison helmets. If you have one of these helmets that needs to be freshened up, this liner is perfect for you.
Full-featured, premium, 360° fit system to dial into the perfect secure fit.
A PVC micro shell lined with proprietary Zip Mold+® liquid injected foam construction that has a higher strength to weight ratio than traditional in-mold helmets, creating a lighter, lower profile helmet.
Fit Size | S | M | L |
---|---|---|---|
CM | 52 - 55.5cm | 55.5 - 59cm | 59 - 62cm |
Hat Size | 6 1/2 - 7 | 7 - 7 3/8 | 7 3/8 - 7 7/8 |
MIPS Brain Protection System
![MIPS Brain protection rotational effects of helmet MIPS Helmet rotational protection eases the impact on the brain, preventing concussions](https://cdn.shopify.com/s/files/1/0027/9379/9739/files/MIPS-Left.png?v=1592511489)
![MIPS Brain protection effects on the brain MIPS protects the brain](https://cdn.shopify.com/s/files/1/0027/9379/9739/files/MIPS-Right.png?v=1592511489)
Rotational motion can cause brain injuries. The low friction layer allows a sliding movement of 10-15 mm in all directions, reducing rotational motion to the brain during impact.
![DVRT Protection DVRT Protection](https://cdn.shopify.com/s/files/1/0027/9379/9739/files/DVRT-Lightbox-Updated.png?v=1716990322)