Both options are included with SPUD pouch 1.The top of the pouch features both hook & loop and pull tabs so you can choose between the included scrim cover or an adjustable shock cord flap 2.The scrim cover, when pulled tight will wrap around any irregular shapes and keep the user’s kit fully locked into the pouch while still maintaining full coverage ADJUSTABLE AND SECURE. The rim of the pouch is lined with an adjustable shock cord loop to keep the contents,The top of the pouch features both hook & loop and pull tabs so you can choose between the included scrim cover or an adjustable shock cord flap. MULTIFUNCTIONAL It will hold anything from a single 556 magazine, all the way up to two 7.62 magazines ,PRC152 radio ,a water bottle,or simliar size gear.(and a wide variety of different items as well)