Sponge dock shelter is a sealing material used to seal doors and windows, resist wind and sand, heat insulation, and prevent noise. It is usually made of rubber, silicone or foam material. Its structure is as follows:

1. The main body of the sponge dock shelter is made of soft sponge material, which is usually rubber or silicone, or other types of foam materials. This material has good elasticity and softness and can effectively fill the gaps in doors and windows.

2. Sponge materials usually have a layer of adhesive or back glue that can be easily pasted onto door and window frames. This layer of glue helps to secure the sponge material and ensures a good seal.

In general, sponge dock shelter is a multi-functional sealing material with good sealing performance, weather resistance and ease of installation. It can be used for various door and window sealing and sound insulation applications to improve the quality and comfort of the indoor environment.