The strong plastic clip will keep the box securely closed. The three available sizes, small, medium, and large, will accommodate a range of fly sizes and quantities. This large version has dimensions of 6 x 4 x 1.6cm (LxWxH) and a weight of 230g, making it suitable for larger flies.Double-sidedProtective foam inserts for safe fly storageWaterproof rim sealStrong plastic clipColour: Black Silver Weight: 230g Dimensions: 6 x 4 x 1.6cm (LxWxH)