For many concealed carry enthusiasts, choosing the right inside-the-waistband holster is one of the most critical steps in ensuring comfort, security, and accessibility. However, despite the best intentions, a surprising number of users end up with holsters that simply don’t fit—either their firearm, their body, or their lifestyle. These “misfits” often lead to printing, discomfort, and even safety concerns.
In this guide, we’ll explore the most common size-related mistakes when selecting an inside-the-waistband holster (IWB) and how to avoid them. Whether you’re new to concealed carry or reassessing your current setup, understanding these pitfalls can make all the difference in both confidence and performance.
Mistake #1: Buying a “One-Size-Fits-All” Holster
The idea of a universal inside-the-waistband holster may sound appealing—especially for those who own multiple firearms—but in practice, it rarely delivers a secure, proper fit. These generic holsters often lack adequate retention, leaving your firearm either too loose or overly tight.
Each firearm has its unique frame size, slide length, and trigger guard shape. A holster molded for a Glock 19, for example, won’t properly secure a Sig P365. A poor fit can lead to shifting, excessive wear on your firearm, or an inability to draw quickly in emergencies.
Tip: Always choose a holster custom-molded for your specific firearm make and model.
Mistake #2: Ignoring Ride Height and Cant Adjustability
Even if you get the holster model right, its ride height (how high or low it sits in your waistband) and cant angle (the tilt of the grip) can drastically affect concealment and comfort. Some people find a high ride helps with grip access, while others prefer a deeper carry for better concealment.
A misaligned cant can also cause the grip to print through clothing or dig into your side, especially when seated.
Tip: Choose a holster that allows for adjustable ride height and cant so you can customize it to your body type and draw preference.
Mistake #3: Overlooking Your Belt Size and Stiffness
A good inside-the-waistband holster is only as effective as the belt it’s paired with. Holsters that feel too loose or tilt away from the body often do so because of thin, flimsy belts that lack support.
Additionally, belt clip sizes must match the width and thickness of your belt. If your clip is designed for a 1.5-inch belt but you’re using a 1.75-inch belt, you’re bound to face compatibility issues.
Tip: Invest in a dedicated gun belt with reinforced stiffness, and make sure your holster clips match the belt width.
Mistake #4: Choosing the Wrong Holster Size for Your Clothing Style
Concealment doesn’t just depend on the holster—it also depends on what you’re wearing. A holster that fits snugly under a jacket might print through a lightweight t-shirt. Likewise, tighter pants may limit waistband space, leading to discomfort or awkward positioning.
People often make the mistake of going for a large holster, thinking it will provide better coverage or stability. In reality, oversized holsters often restrict movement and make concealment harder in casual clothing.
Tip: Match your holster size to your daily wardrobe. For slimmer clothing, consider minimalist holsters or compact options for subcompact pistols.
Mistake #5: Confusing IWB with OWB Needs
An inside-the-waistband holster is designed to tuck inside your waistband for concealment, while an OWB holster (outside the waistband) is typically for open carry or range use. Sometimes users mix these up, especially when ordering online. While some holsters claim to work for both styles, the structure and retention mechanics differ between the two types.
Using an OWB holster in an IWB position may lead to painful pressure points or lack of firearm retention.
Tip: Know the difference between IWB and OWB designs, and purchase holsters accordingly based on your carry goals.
Mistake #6: Failing to Test Holster Placement
The waistband is a large area—ranging from the appendix (front), 3 o’clock (side), to 5 o’clock (back). Holster size issues often emerge because users don’t test different placements for comfort and concealability. For example, a bulkier holster might work at the back but become intrusive when worn at the appendix.
Tip: Experiment with carry positions and test your holster in various locations before settling on a permanent spot.
Final Thoughts
A properly fitted inside-the-waistband holster is essential for safe, effective, and comfortable concealed carry. Avoiding common mistakes like buying universal holsters, ignoring adjustability, or mismatching with clothing can save you time, money, and frustration. Always prioritize fit and function over trend or price.
And if you’re looking for more tactical flexibility, pairing your IWB setup with an OWB holster for range days or outdoor use can give you the best of both worlds.
