First of all, the color should be bright and striking. Reflective tow rope material would be better if towing car at night.
The working load of the strap must be matching the vehicle weight. The tow rope breaking strength varies from 1000kgs to 8000kgs according to different materials and manufacturing methods. Normally speaking, the family car weight about 1000kgs to 2000kgs, so a tow rope with breaking strength 3000kgs can fix the towing work enough.
Finally, different vehicles may have different towing devices. Further, the tow rope can attach different ends or hooks in different sizes. So customer have to check their car towing device in advance to avoid incorrect choose and delay the rescue.