![By using a t-shirt, you can make this helmet liner cap in a flash. You don't even need a serger, becaus… | Helmet liner, Fabric sewing patterns, Hat patterns to sew By using a t-shirt, you can make this helmet liner cap in a flash. You don't even need a serger, becaus… | Helmet liner, Fabric sewing patterns, Hat patterns to sew](https://i.pinimg.com/736x/d2/43/1e/d2431e406b1124b1bfe5a2ab8ba162c4.jpg)
By using a t-shirt, you can make this helmet liner cap in a flash. You don't even need a serger, becaus… | Helmet liner, Fabric sewing patterns, Hat patterns to sew
![2 bandanas + scissors + 3M spray adhesive= DIY helmet liner. | Roller derby girls, Roller derby, Derby skates 2 bandanas + scissors + 3M spray adhesive= DIY helmet liner. | Roller derby girls, Roller derby, Derby skates](https://i.pinimg.com/originals/d1/ed/9f/d1ed9fa7b41f02682e31dc5cb741ee3e.jpg)
2 bandanas + scissors + 3M spray adhesive= DIY helmet liner. | Roller derby girls, Roller derby, Derby skates
![Helmet Pad Foam Durable Easy Install Universal Insert Protection Liner for Bicycle Bicycle Motorcycle DIY Decoration Equipment - AliExpress Helmet Pad Foam Durable Easy Install Universal Insert Protection Liner for Bicycle Bicycle Motorcycle DIY Decoration Equipment - AliExpress](https://ae01.alicdn.com/kf/S02f9328ab6e04eff95cdf76d0e255ae8D.jpg_640x640Q90.jpg_.webp)