How to Choose the Right Size of Underwear: A Sizing Guide

Quick Answer

To find your underwear size, measure your waist just above your hips and compare to the brand's size chart. Underwear should fit snugly without digging in, and the legs should stay in place without riding up. For SAXX, use the waist measurement and consider your preferred fit—whether you like a shorter or longer leg.

Choosing the right underwear size is about more than just waist measurement—it's about comfort, support, and confidence. Ill-fitting underwear can cause chafing, ride-up, and discomfort throughout the day. This guide will help you understand how underwear should fit and provide practical steps to find your perfect size.

We'll cover how to measure yourself, interpret size charts, and what to look for in different styles. Whether you're buying for yourself or as a gift, these tips will ensure a comfortable fit every time.

How to Measure for Underwear

To determine your underwear size, you'll need a soft measuring tape. Measure around your waist at the narrowest point, typically just above your belly button, keeping the tape snug but not tight. This measurement in inches is your waist size. For example, if you measure 34 inches, you'll likely wear a size medium or large, depending on the brand's chart.

Many brands, including SAXX, provide size charts that map waist measurements to sizes. For instance, SAXX typically uses sizes like Small (28-30 inches), Medium (32-34 inches), Large (36-38 inches), and XL (40-42 inches). Always check the specific brand's chart, as sizing can vary.

• Measure your waist at the narrowest point, not where you wear your pants.
• If you're between sizes, consider your preference: a tighter fit for support or a looser fit for comfort.

How Should Underwear Fit?

Underwear should fit snugly but not restrictively. The waistband should sit comfortably without digging into your skin, and it shouldn't roll down. The pouch area should provide support without being too tight, and the legs should stay in place without riding up or leaving marks.

If you experience frequent ride-up, it may be a sign that the leg opening is too loose or the fabric lacks enough grip. Look for styles with features like No-RideUp LegTM, which help keep the legs in place. Also, consider the rise: a mid-rise is standard, but some prefer a higher or lower rise depending on their torso length.

• You should be able to move comfortably without the underwear shifting.
• Avoid underwear that leaves red marks on your skin after wearing.

Size Variations Across Styles

Different underwear styles may fit differently even within the same brand. For example, boxer briefs and trunks have different leg lengths, which can affect sizing. A longer leg might feel tighter at the thigh if you have muscular legs, so you might size up for comfort. Loose boxer shorts, on the other hand, offer a more relaxed fit and may follow a different size curve.

SAXX offers a range of styles, from boxer briefs to loose boxer shorts. The Ultra Super Soft Boxer Brief is a snug fit with a fly opening, while the Daytripper Comfort Stretch is a loose boxer short with a more relaxed feel. When ordering, consider the style's intended fit and your personal preference.

• If you're between sizes, choose the larger size for a more relaxed fit or the smaller for a supportive fit.
• Read product descriptions for fit notes, such as 'slim fit' or 'regular fit.'

Using the SAXX Size Chart

SAXX provides a size chart that correlates waist measurements to sizes. To use it, take your waist measurement and find the corresponding size. If you're between sizes, SAXX recommends sizing up for a more comfortable fit, especially if you prefer a looser feel.

Keep in mind that different fabrics may stretch over time. Cotton blends may relax slightly, while performance fabrics like those with spandex retain their shape. If you're unsure, consider ordering two sizes and returning the one that doesn't fit, or purchase a multi-pack to test the fit.

• Always measure your waist, not your pant size, as pant sizes can vary.
• When in doubt, size up for comfort, as underwear that's too tight is more uncomfortable than slightly loose.

Decision Rules for Choosing Your Underwear Size

• Measure your waist accurately: Use a soft tape measure around the narrowest part of your waist, typically just above the belly button. Keep the tape snug but not tight. Record the measurement in inches. This measurement is your starting point for any size chart.
• Compare to the brand's size chart: Each brand has its own sizing. For SAXX, find your waist measurement on their chart to get your size. If you're between sizes, read the brand's recommendation—often, they suggest sizing up for comfort. Don't assume your pant size is your underwear size.
• Consider the style's fit: Boxer briefs and trunks are typically snugger, while loose boxer shorts are more relaxed. If you have larger thighs, you may need to size up in longer-leg styles. For athletic builds, a performance fabric with stretch may offer a better fit. Style affects fit—choose accordingly.
• Try a multi-pack to test: If you're unsure between two sizes, consider buying a multi-pack of your preferred style. This allows you to try the fit and return or exchange if needed. Multi-packs are a cost-effective way to find your size.

SAXX Styles and Sizing Considerations

• Ultra Super Soft (3 Pack): Ultra Super Soft is a fan-favorite that’s perfect for everyday wear. This ridiculously soft and breathable Boxer Brief comes with the BallPark Pouch® and features a fly opening. Three-pair pack. This style is a classic boxer brief with a snug fit. The soft, breathable fabric is ideal for all-day wear, and the fly opening adds convenience. When sizing, consider that the fabric is stretchy but may feel snug if you prefer a looser fit.
• Daytripper Comfort Stretch (3 Pack): Daytripper Comfort Stretch is a Loose Boxer Short made with a durable, breathable, and moisture-wicking fabric to deliver premium comfort for guys on the go. Includes the BallPark Pouch® and Stop Drop TechnologyTM. Three-pair pack. As a loose boxer short, this style offers a more relaxed fit compared to boxer briefs. If you prefer a roomier feel, you might choose your regular size or even size down if you like a closer fit. The moisture-wicking fabric is great for active days.

Fit Guidance

Best For

• Those who prefer a snug, supportive fit with no ride-up.
• Athletic builds that need stretch and moisture-wicking performance.

Not For

• Those who prefer a very loose, relaxed fit—consider loose boxer shorts instead.

Finding the right underwear size is straightforward when you measure correctly and consider the style's fit. Use the size chart, trust your comfort preferences, and don't hesitate to try a multi-pack to confirm your size. With the right fit, you'll enjoy all-day comfort and support.