I think it's a pretty interesting product. K&F Concept is known for offering good quality photography accessories, and this case seems to be a useful addition for photographers.
### Features
1. **Protection**: The case is designed to protect DSLR camera lenses and lenses, which is essential for keeping the equipment in good condition.
2. **Size**: With an inner size of 7 x 11 cm, it seems suitable for most smaller objectives, making it practical and portable.
3. **Waterproof**: The fact that it is waterproof is a great advantage, since it protects the equipment from moisture and water in adverse weather conditions.
4. **Zipper**: The zipper makes it easy to access the lenses quickly, which is useful during a photo shoot.
### Quality
- **Good**: K&F Concept products are generally considered to be of good quality, and this cover seems to follow that line. The choice of materials and design are important to provide the protection and durability that photographers need.
### Conclusion
Overall, the K&F Concept protective case has features that make it a good choice for those looking to protect their objectives. If you're a photographer or simply an enthusiast of photographic equipment, it could be a valuable investment to take care of your material.