To improve a buffering function by arranging a buffering member interposing a buffer sheet in the state of sandwiching while arranging a lot of small bags sealing air inside the lid of cloth bag and inside the main body.

This bag is composed of the main body sewing front cloth 1A and 3A with thick fabric while attaching a pocket formed as desired at any desired position and the lid covering the opening of main body, and the main body and the lid are freely opened/closed. Concerning a soft synthetic resin plate-shaped member composed of urethane foamed materials or the like arranged inside the lid and the main body, the buffering member interposing a buffer absorptive sheet 6 in the sandwiching state while arranging many small bags sealed with air is arranged between two layers of soft synthetic resin plate-shaped members 5A and 5B composed of urethane foamed materials. The bag sewn while using this material is used while performing water repellent and antibacterium working to the front cloth. Even when the bag storing any precise mechanical instrument is a little violently placed on a hard object, its shock is absorbed and the stored precise mechanical instrument can be protected from shock.