Most athletic shoes (e.g., running, etc.) are designed for you to move in only one direction - forward. Tennis shoes are designed for you to move in all directions as lateral stability is very important in tennis. Also, tennis shoes tend to use more durable out soles as sudden stops and starts takes off a lot of rubber. Tennis shoes are typically more flat with specifically designed patterns on the sole, all depending on which type of court surface you generally play on. Other types of shoes have thicker, softer heels that decrease weight and cushioning to lessen impact- tennis soles are built sturdier. The best tennis shoes for this type of feet is a pair with lots of durability (especially the sole), cushioning, and moderate to high arch support. A complete impression of your foot means you have a pronated foot, or a low arch. EVA stands for ethel vinyl acetate which is a man-made material that is considered foam. This is a co-polymer of ethylene (C2H4) and vinyl acetate (CH3CO2CHCH2). While EVA foam is highly useful for footwear, it can be used for other things as well, like suits of battle armor. The PVC Soles have great oil resistance, abrasion resistance, good insulation properties. PVC Soles are mainly done with direct injection process but can also be made as PVC foam boards which are calendared and cut. It has good flexing and abrasion resistance.