Size adjustment is by way of laced elastic shock cord which is threaded through the side of the pouch.
Comes with optional bungee retention tabs as seen on the Warrior Assault Systems Open Mag Pouches for operators requiring additional security of their magazines.

High Quality Threads
Thread quality is fundamental to the construction, durability and strength of tactical equipment.
Two factors have a negative impact on the life Span of threads

Mildew is one of the most common factors in the deterioration of military kit, causing it to rot and ultimately results in unacceptable failure.
Sunlight has a harmful effect on the performance of threads, and over time causes their deterioration.

Warrior only uses the highest quality US Mil Spec nylon threads imported from the USA which are threated against both UV and Mildew.

Fiber Resistance to Acid – Good
Fiber Resistance to Alkali – Good
Fiber Abrasion Resistance – Excellent
Fiber Resistance to Heat – 142 deg C (Highest continuous temperature before breakdown)
Fiber Melting Point – 265 deg C

MIL SPEC Fabric
500D Nylon fabric feature enhanced tear and abrasion resistance, and long lasting durability, 500D Nylon fabric made with solution dyed yarns are inherently stain resistant and easy to clean. MultiCam, Coyote Tan, Ranger Green, Black and A-TACS FG fabrics are all I.R Treated for the lowest signature.
MOLLE System
This product uses MOLLE to connect to other items creating a modular and adaptive system.