I really like these six compartment magnetic fly box's. It fits in a shirt pocket and is great for when you are headed to the river for just the day. It will hold my fly's even upside down, so if you turn it over when you do not mean to, everything will not spill out. If a wind gust comes along, you will not have things fly off. Use a label gun to put your name and or phone number in your box's. That way if you lose it, most people will call you to return it.