The strips are made by 3M and are called "Dual-Lock", they sell them retail under other names (Command Strips, etc)
One of the benefits of Dual Lock is that there is much less movement than with hook-loop fasteners, much more of a firm grip, less slop. After you use Dual Lock, by comparison hook-loop will seem cheap/flimsy. I really like it for items that need solid fastening and don't need to be removed/re-attached a lot.
To expand on the (doesn't leave adhesive residue) statement, hook-loop or Dual Lock can come with a variety of different adhesives for different purposes/for different types of surfaces. Unfortunately I know a little too much about some of these offbeat topics, but the upside is that with a better suited product you can get superior results for the intended use…which can be a make-or-break detail for a project. I'm providing an excerpt and you can search "3M Dual Lock Technical Data" to get a plethora of cool info.
**Note: I think when you purchase the retail packs of Command Strips, they are all 250/250 stem densities.**
"There are three different stem densities of these fasteners (170, 250 and 400)
that refer to the approximate number of stems per square inch. By inter-locking
different stem density combinations you can create the strength that suits your
application--more total stems produces higher strength.
The Dual Lock reclosable fasteners can be mated in the following combinations of
increasing closure strength: Type 170 to Type 250, Type 170 to Type 400, Type 250
to Type 250 and Type 250 to Type 400. We do not recommend using the type 170
to 170 because it does not have good strength. We do not recommend using the type
400 to 400 because it is too strong and may cause stems and heads to rip out
when prying apart--rendering the fastener no longer reclosable.
There are a variety of pressure sensitive adhesives available with Dual Lock
reclosable fasteners to cover most application needs. The pressure sensitive
adhesive makes the Dual Lock reclosable fasteners easy to use. Simply remove the
liner, place the Dual Lock reclosable fasteners, and apply firm, consistent pressure
to assure good contact with the substrate you are adhering."