• Here are a few options
• all natural for South American Spanish
• ranging slightly in formality and emphasis: 1. **Ligero desgaste en la parte central de la espalda.** * (Slight wear on the central part of the back.) - *This is probably the most direct and common.* 2. **Leve desgaste en el centro de la espalda.** * (Minor wear in the center of the back.) - *Similar to the first
• "leve" is a good synonym for "ligero."* 3. **Pequeño desgaste del tejido en la zona media de la espalda.** * (Small wear of the fabric in the middle zone of the back.) - *More explicit about "fabric" ("tejido").* 4. **Un poco de desgaste en la mitad de la espalda.** * (A bit of wear on the middle of the back.) - *Slightly more informal
• but perfectly understandable.* I'd lean towards **"Ligero desgaste en la parte central de la espalda."** as the most universally appropriate and clear.

Características:

• Sin patrocinador