Fabletics Slim vs. Classic Fit: Sizing comparison [2026]

The Fabletics Classic Fit offers a relaxed, comfortable silhouette with a forgiving cut, while the Slim Fit is designed for a snug, body-hugging feel that provides more compression and support. The Classic Fit is ideal for those who prioritize everyday comfort or appreciate a bit more room, whereas the Slim Fit is tailored for those who want a sculpted, athletic look that stays in place during intense activity.

Here’s everything you need to know to choose the right Fabletics fit for your body and workouts.

Fabletics Classic Fit

The Fabletics Classic Fit is all about comfort and versatility, designed as the brand's standard fit for activewear. It features a more relaxed cut that drapes naturally without feeling baggy, making it an excellent choice for a wide range of body types. These pieces are intended for everything from moderate workouts to everyday errands and lounging.

• What it is: A standard, more relaxed fit for activewear designed for all-day comfort and performance.
• Key features: Comfortable waistband that sits without digging in, ample room through the hips and thighs, and soft, stretchy fabrics suitable for moderate activity.
• Price: Varies by item, typically $49-$89 for bottoms without VIP pricing.
• Fit: Generally runs true to size with a forgiving silhouette. If you are between sizes, your regular size will likely offer a comfortable, slightly looser fit.
• Pros: Accommodates a wider range of body types, extremely comfortable for casual wear, versatile enough for the gym and daily life, and a more forgiving fit if you're unsure of your size.
• Cons: Offers less compression and support for high-impact workouts, may feel too loose for those who prefer a sculpted look, and could potentially slide down during intense movements for some people.

This fit is perfect for individuals who value comfort above all, prefer a less restrictive feel, or are looking for versatile activewear for low-to-moderate intensity activities and daily wear.

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Fabletics Slim Fit

Fabletics Slim Fit is engineered for a streamlined, body-hugging silhouette that contours to your shape. Created with higher-compression fabrics, this fit offers a "held-in" feel that supports muscles and stays put during high-intensity exercise. It's the go-to for anyone seeking a sculpted, athletic appearance and a second-skin sensation from their activewear.

• What it is: A form-fitting cut designed to provide strong support and a sculpted, athletic look.
• Key features: High-compression fabric, a snug waistband for security, a second-skin feel that contours to the body, and materials optimized for performance.
• Price: Varies by item, typically $49-$89 for leggings without VIP pricing.
• Fit: Runs true to size but is intentionally snug. The compression can make it feel tight, so some customers who prefer a slightly less restrictive feel choose to size up.
• Pros: Excellent support for high-impact activities like running and HIIT, provides a sculpted and flattering silhouette, enhances curves, and stays securely in place during movement.
• Cons: The snug compression can feel restrictive for some, it may not be as comfortable for all-day lounging, and finding the perfect size can be tricky if you're between sizes or new to compression fit.

This fit is engineered for those who want maximum support during intense workouts and prefer a form-fitting, sleek look that highlights their physique.

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Classic Fit vs. Slim Fit Comparison

Sizing & Cut

The most immediate difference is in the cut. The Classic Fit is designed with more ease, drapes comfortably over the body, and has a more generous fit through the waist, hips, and thighs. It's meant to be functional without feeling constrictive.

In contrast, the Slim Fit is engineered to be snug and contouring. It has a high-compression construction that hugs the body tightly for a "locked-in" feel. While both generally run true to size, the Slim Fit will always feel much tighter due to its purpose.

Comfort & Compression

Comfort is subjective, but the Classic Fit wins for all-day or casual wear. Its softer, stretchier feel is perfect for lounging, errands, or low-impact exercise like yoga and walking. It offers minimal compression, focusing instead on ease of movement and breathability.

The Slim Fit prioritizes performance and support over leisurely comfort. The high compression provides a secure, held-in sensation that many find beneficial for running, jumping, and lifting. It’s comforting in its security, but not necessarily what you’d choose for a movie marathon on the couch.

Performance & Versatility

For high-impact activities, the Slim Fit is the clear winner. The compression offers muscle support and is designed to stay firmly in place, preventing slipping or readjusting during intense workouts. It provides confidence that your gear will move with you.

The Classic Fit is far more versatile for a balanced lifestyle. It's appropriate for a gym session, but also looks and feels great on a coffee run or while working from home. If you want one set of activewear to seamlessly transition through your entire day, the Classic Fit is the more forgiving choice.

Which One Should You Choose?

Both fits serve different needs, so the right choice depends on your activity level and personal preferences for fit and feel.

Choose the Classic Fit if:

• You prioritize all-day comfort for lounging and errands.
• You have a curvier figure or prefer a more forgiving, less compressive fit.
• Your workouts are typically low-to-moderate intensity, such as yoga, walking, or light gym work.
• You want activewear that feels relaxed and allows for maximum ease of movement.

Choose the Slim Fit if:

• You need maximum support and compression for high-impact workouts like running, HIIT, or plyometrics.
• You prefer a sculpted, body-hugging silhouette that highlights your shape.
• You value a secure, "locked-in" feel and want leggings that will not budge during activity.
• You have a leaner build or simply enjoy the feeling of high-compression fabrics.

Frequently Asked Questions

What’s the main difference between Fabletics Classic and Slim Fit?

The primary difference is compression and silhouette. Classic Fit is relaxed, forgiving, and designed for everyday comfort with minimal compression. Slim Fit is snug, supportive, and uses high-compression fabric for a sculpted look and a secure feel during intense exercise.

Do Fabletics fits run true to size?

Yes, both fits generally run true to size according to the Fabletics size chart. However, "true to size" will feel very different. Choose your regular size in Classic Fit for a comfortable feel. Choose your regular size in Slim Fit for an intentionally snug, compressive feel.

Should I size up for Fabletics Slim Fit?

This is a personal preference. If you want the intended high-compression benefits, stick to your usual size. If you enjoy the look of the Slim Fit styles but prefer a less restrictive feeling, you might be more comfortable sizing up one size.

Which fit is better for running?

The Slim Fit is superior for running and other high-impact activities. Its high compression offers muscle support and the secure waistband prevents slipping or sliding down during intense movement.

Which fit is better for yoga or lounging?

The Classic Fit is ideal for yoga, stretching, and lounging. Its relaxed cut and softer feel provide greater freedom and comfort for slow-paced activities and all-day wear.

As someone who is between sizes, which fit should I choose?

If you're between sizes, choose your smaller size in the Classic Fit for a neatly tailored but comfortable fit. For the Slim Fit, it's safer to go with your larger size to ensure it isn’t overly restrictive.

Does Classic Fit offer any compression?

Classic Fit offers very light compression, focused more on gentle shaping and hold rather than the intense muscle support found in the Slim Fit. The primary goal is comfort and stretch.

Are both fits available in plus sizes?

Yes, Fabletics is known for its inclusive sizing. Both the Classic and Slim fits are typically available in a wide range of sizes, often from XXS up to 4X.

How can I be sure I'm choosing the right size?

Always reference the specific item's size chart on the Fabletics website and read recent customer reviews. Reviewers often provide valuable insights on whether an item runs smaller, larger, or perfectly true to size for their body type.