Warm Up Track Pants: Fit, Fabric and Sizing Explained

By Women's Activewear and Workout Clothes | Published: 2026-10-16

Category: Product Reviews

Learn how warm up track pants should fit, how to read a size chart, and how fabric and length affect comfort. A practical sizing guide for women's track pants.

Quick answer

Warm up track pants should feel secure but not tight: the waistband stays put without digging in, the fabric glides over your thighs, and the hem reaches your shoe without dragging. Measure your waist, hips and inseam, then match them to the brand's size chart rather than your usual jeans size. If you're between sizes, size up for a relaxed fit or stay true to size for a closer one.

Why track pants sizing differs from jeans

Warm up track pants are built for movement, so their measurements follow activewear blocks rather than denim blocks. A size 8 in jeans can be a size 10 in track pants because the brand adds room for layering and range of motion. That's why a track pants sizing guide always starts with body measurements, not your usual clothing size. Check the chart for waist, hip and inseam, and note whether the fit is described as relaxed, regular or slim.

Fabric changes how fit feels

The fabric determines whether a pair skims or clings. Double knit with a brushed inner, like the Warm Up Track Pants, holds its shape and adds warmth without bulk, so it feels structured yet soft. Brushed fleece, used in the Lounge Fleece Trackpants, is loftier and more relaxed, which can make the same size feel roomier. Neither fabric is better for every use: double knit suits cooler warm-ups and athleisure styling, while fleece is better for lounging and cold-weather errands.

How to measure for a track pants size chart

Use a soft tape measure over light clothing. Waist: measure at your natural waist, the narrowest point above your belly button. Hips: measure the fullest part of your seat. Inseam: measure from your crotch to where you want the hem to sit, usually the top of your shoe. Write these down before you open the size chart. If your waist and hips fall into different sizes, choose the size that matches your hip measurement for track pants, since the waistband is usually adjustable.

Length and hem: what to check before you buy

Track pants length is not one-size-fits-all. A regular inseam usually lands at the ankle bone; a tall inseam covers more of the shoe; a short inseam ends above the ankle. If you plan to wear them with chunky sneakers, add half an inch to your usual inseam so the hem doesn't catch. For a cropped look, choose a shorter inseam deliberately rather than sizing down, which would tighten the waist and hips. The product page may not list an exact inseam, so treat the model's height and size as a rough guide and check the return policy if length is critical.

Your step-by-step track pants fit check

Measure your waist, hips and inseam: Use a soft tape over light clothing. Waist at the natural waist, hips at the fullest part, inseam from crotch to desired hem. Mistake to avoid: measuring over thick jeans or guessing from your pants size.
Compare your numbers to the size chart: Match your hip measurement first, then check waist. If you're between sizes, decide based on the fit description: relaxed or regular. Checkpoint: your hip measurement should fall within the size range, not just your waist.
Try the waistband and drawcord: The waist should stay up without rolling or digging. Adjust the drawcord for a snug, flexible fit. Mistake to avoid: tightening the drawcord so much that the fabric bunches.
Move through a squat and a lunge: The fabric should glide, not pull across the thigh or seat. Check that the rise stays comfortable when you bend. If you feel restriction, size up or choose a more relaxed style.
Check the hem with your usual shoes: Wear the sneakers you'll train in. The hem should skim the shoe without dragging or exposing your ankle in cold weather. Mistake to avoid: judging length barefoot, which adds or subtracts an inch.

Product facts that affect fit

Warm Up Track Pants: Features hand pockets, a secure back zip pocket, and an elasticated waist with drawcord adjustability. The drawcord lets you fine-tune the waist, and the zip pocket keeps keys or a card secure during warm-ups.
Lounge Fleece Trackpants: Made from cosy brushed fleece fabric with a relaxed fit, side pockets, and a soft waistband with drawcord adjustability. The relaxed cut and fleece loft give more room through the hip and thigh, so if you're between sizes and want a laid-back fit, this style runs roomier.
Get Fit Sports Bra: High neckline for sun protection, keyhole for ventilation, wider straps for high support, and sweat-wicking mesh fabric. A supportive bra sits close to the body, so size it by your underband and cup, not your track pants size, to avoid a too-tight or unsupportive fit.