What is velcro for, is it to close the wallet or hold the ID display down?

ASIN	B01BPEOA9Q
ASIN	B07178PDSN
Age Range Description	Adult
Amazon Bestseller	#501,894 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #4,151 in Men's Wallets
Amazon.co.jp Return Policy	Regardless of your statutory right of withdrawal, you enjoy a 30-day right of return for many products. For exceptions and conditions, see Return details .
Brand Name	Timberland
Closure Type	Folding
Color	green
Customer Reviews	4.6 4.6 out of 5 stars (10,151)
Date First Available	May 28, 2017
Department	Men
Form Factor	Tri-Fold
Global Trade Identification Number	00684835212144
Item Dimensions D x W x H	1.5D x 8W x 11.5H cm
Item Weight	0.11 Pounds
Item model number	D37388
Lining Description	Nylon
Manufacturer	Timberland Accessories
Manufacturer	Timberland Accessories
Material Type	Nylon
Model Number	D37388/34A
Number Of Pockets	16
Number of Compartments	1
Number of Sections	4
Package Dimensions	11.43 x 7.62 x 1.27 cm; 453.59 g
Pattern	Solid
Style Name	Casual
UPC	684835212144
Wallet Card Slot Count	13
Wallet Compartment Type	Coin

Timberland Men's Trifold Nylon Wallet D37388