Amazon commercial Neoprene Adjustable Cable Sleeves, 59-Inch, (2-Pack) £5.61 @ Amazon

Dimensions when open: 59 x 5.3 inches . Diameter is 3.5cm when roll up, which is suitable for wrap many cables
Wrap multiple cables together in just one sleeve to keep your home or office tidy and organised
Prevents cables from becoming tangled and messy; Velcro opening makes it easy to add or remove cables from the sleeve
Made from high-quality neoprene material that's highly flexible and durable to withstand everyday wear and tear
Reversible design with black on one side and white on the other to match your decor; black looks cleaner for longer, while white is easy to hide against walls
Can be bent, folded, and cut to create a custom solution to any situation