This is an EVALUATION REVIEW for the item sold on AMAZON with the description:
K&F Concept Protective Lens Case, Waterproof Bag with Zipper for Objectives, Protective Case for DSLR Camera Lenses (Inner size 7 x 11 cm), S

The quality of these cylindrical bags for small lenses is very high, they offer great protection both for shocks and for dirt and weather, due to their excellent quality materials and construction, It turns out very padded on the inside between cloths in foam material, the outside is a synthetic synthetic leather that feels slightly rubberized and stippled in appearance. The inner lining is made of synthetic polyester fibers, much cleaner and more waterproof than cotton or velvety fabrics (this synthetic fabric with long fibers does not absorb moisture or retain dust, pollen, mites, etc..., does not contaminate with microhairs and results in better cleaning if it gets dirty accidentally), the bag opens in its upper side area with any of the two zippers enabled, that is, it can be closed/opened to one side or the other, on the back of this flap/cover there is a small ruler pocket to be able to insert some suede, memory cards or even a small battery if the lens we are inserting is not very tall and does not fit the bag up to the top. As a gift in the KIT we get a blower/cleaner made of rubberized material with an elongated PVC tip, these are very useful for users to sometimes be able to remove small particles or hairs without contact on the reflex mirror, the sensor or the focus screen of DSLR cameras or for the sensor or bayonet contours in mirrorless models (without a reflex system). Inside the bag, a support strap is also attached, which attaches with small PVC carabiners to the “D” rings that the bag carries on its sides. Another support system that I explain well in my video describing Unboxing, is a system with a large back loop that can be opened and closed with a double velcro system and that allows us to attach the bag to a belt or to a shoulder strap of the camera bag or backpack, for example, and if we want to hang the bag from a hanger or a carabiner from the bag or backpack, we can also fix it with an upper strap that comes out of the upper back of the bag. As you can see, these K & F designers seem to have thought of everything when designing their bags, both to be protective and to have great features and functionalities with very diverse support configurations.
From the first moment I discovered its characteristics, it was clear that this is a
“5 STAR” article [* * * * *], because of what I have already mentioned in this review and because I think that the quality/price ratio is also good, there are cheaper bags but not with this quality of performance in this K&F range.
I hope you find this review useful. A cordial greeting.
Excellent quality materials and construction, very padded, ext. waterproof synthetic leather with rubberized feel.
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K&F Concept Protective Lens Case, Waterproof Bag with Zipper for Objectives, Protective Case for DSLR Camera Lenses (Inner size 9 x 18cm), L
The quality of these cylindrical-shaped bags for MEDIUM LONG lenses (full-format angle sensor with variable focal length at medium screen or multipurpose lenses with a wide zoom range from angle to long screen for APSC camera formats are usually suitable for this larger bag in height and diameter in width) is very, very tall, they offer great protection both for shocks and for dirt and weather, due to their excellent material quality and construction, it is very padded inside with foam cloths, the outside is a synthetic leather that is waterproof, slightly rubberized and stippled in appearance.
From the first moment I discovered their features and benefits and much more considering their adjusted sales price, I was already clear that these are items in all size formats of the highest category, however, I decided to keep them in use for a few weeks to carry my lenses during photo appointments and I couldn't be happier with the level of transport comfort and the security of protection that it gives to my lenses:
"5 STARS" [* * * * *] RECOMMENDED PURCHASE.
Surely there are cheaper bags (some neoprene types) but not with the quality of performance of this K&F range.
I hope you find this review useful. A cordial greeting.

This is a REVIEW REVIEW for the item sold on AMAZON with the description:
K&F Concept Protective Case for Lenses, Waterproof Bag with Zipper for Lenses, Protective Case for DSLR Camera Lenses (Inner Size 8X 14cm), M
The quality of these cylindrical-shaped bags for MEDIUM lenses (short variable focal angles or fixed focal macros are usually suitable for this size of bag) is very, very high, they offer great protection both for shocks and dirt and weather, due to its excellent quality materials and construction, is heavily padded on the inside between sheets of foam material, the outside is a synthetic synthetic leather that is slightly rubberized and has a stippled appearance.
From the first moment I discovered its features and benefits and much more considering its adjusted sales price, I was already clear that this is an item of the highest category, however I decided to keep them in use for a few weeks to carry my lenses during photo appointments and I couldn't be happier with the level of transport comfort and the security of protection it gives to my lenses:
"5 STARS" [* * * * *] RECOMMENDED PURCHASE.
Surely there are cheaper bags (some neoprene types) but not with the quality of performance of this K&F range.
I hope you find this review useful. A cordial greeting.