The Roam Tech Double Slim Fun Surfboard Bag. The Tech Double Slim is a stealth double travel bag. The design is the same feature-rich, travel tested specification from our TECH bag. The Double Slim, also has an expanding hidden sidewall to convert from a single to a double board bag and back to a single in an instant. It’s a super versatile design for travel. As with all of our bags it is cut longer so a bag will fit the size that it is labelled for. ie. a 6’8 bag will fit any size up to and including 6’8 so you can carry your groveller and your step up when checking the surf.