Storage GPS

I purchased this case to store plastic GPS Nuvi 250W 4.3 ": one can store the GPS and its power cable, but for the suction cup is too small;
dimensions: length: 15 cm; width: 11 cm; height: 7 cm; two half-shells, zippered;
by opening it, I discovered a strap inside the case; the latter is fixed by a carabiner.
Photo available at www.Amazon.com matches the product. The material is waterproof.