I have two Nate Squared (N82) Tactical Professional IWB tuckable holsters,
www.n82tactical.com. One is for my Glock 17 Gen 4 and the other one is for my Glock 30 Gen 4. N82 sells several types of holsters but I like their Professional model best. It is a single clip holster that I wear at 9 to 9:30 as I am left handed. Some people don’t like a single clip because they say the holster moves around. Mine settles into my left hip and doesn’t move around at all. It is all day wearing comfort.
N82 also sells a Tandem model that has two clips. A single clip holster is much easier and faster to put on and take off plus the backing is larger than the Professional to accommodate the two clips.
The Professional and Tandem have 3 layers of material. A very soft suede backing that sits against your body inside your belt, then a rubber neoprene layer to block moisture from reaching the gun and the soft leather on the outside of the holster that the gun sits next to. No part of the gun ever touches your body. I always wear a T-shirt under my outer shirt. The gun slides into a poly carbonate which has retention and trigger guard protection.
N82 has a lifetime guarantee and a 30 day trial. Their products and customer service is absolutely superior.
While talking about holsters, it is very important to have a good gun belt to hold and support the weight of the holster and gun. You shouldn’t use a “department store” belt as it is not thick enough or rigid enough. I highly recommend a Bigfoot gunbelt
www.gunbelts.com. I have a 18 ounce belt with a stainless steel core between the two layers of English bridle leather. Their quality and customer service is also superior and they have a trial period too.