The MATCHCAP XL can carry all sizes of matches from standard kitchen strike-on-the-box to NATO matches and even the extended length stormproof matches. With the dual-striker design you can use safety matches or strike-anywhere matches. An O-ring keeps both the matches and the red phosphorus (strike-on-the-box) striker dry. The MATCHCAP XL isn't limited to just matches. Using a Stormproof (2.9" long) match, the new design leaves 0.3" to spare for tinder storage. If using kitchen matches, nearly half of the MATCHCAP XL is available for storage. Use the extra space to store water purification tablets, tinder, medicine, fishing hooks, first aid kit, etc.