Scorpion Lock Straps feature a rubberized non-slip surface to provide maximum grip on the battery. This lock strap was developed for 250 to 280 size multirotor applications, and dramatically reduces the chances of the battery coming loose during flight. Strap measures 195mm long total, with a 75mm long hook section and 105mm loop section.
This product was added to our catalog on March 17, 2016
Friday, Aug 5 2016 (about 2 years ago)
Scorpion Battery Lock Strap Set (3) (Xtra-Small)
Got these because I was using the silicone gel straps which peel apart with little use.
These seem to have been soaked in a rubber compound and seem to have superior durability.
I did just get them so, time will tell.