Sweatpants vs Joggers: What Is the Difference?
Sweatpants and joggers are both knitted trousers with an elasticated waist, but they are cut and finished differently. Sweatpants traditionally have a straight, open leg that falls from the hip to the ankle, with a plain hem or a loose rib. Joggers taper toward the ankle and finish with a fitted cuff, so the leg gathers at the bottom. Today the words are used loosely, which is why a tech pack should describe the actual shape rather than relying on the name.
From a manufacturing point of view, joggers add an extra component, the cuff, which must be knitted, cut and attached accurately. Sweatpants with a plain hem are simpler to sew but need a clean hem finish. Our guide to tracksuit and joggers manufacturing covers the wider category, including matching sets.
Sweatpants and Joggers Compared
The table below sets the two styles side by side on the points that change the pattern, the sewing and the buyer experience. Treat it as a briefing aid; many modern products sit between the two.
Sweatpants vs joggers
| Feature | Sweatpants | Joggers |
|---|---|---|
| Leg shape | Straight or wide, falls from hip to ankle | Tapered toward the ankle |
| Hem | Open hem, hemmed or lightly ribbed | Fitted rib cuff, sometimes with a zip |
| Fit through the thigh | Relaxed to generous | Relaxed to slim |
| Typical look | Classic, retro or oversized | Athletic, streetwear or modern casual |
| Extra components | Hem finish, optional side vents | Cuff rib, cuff attachment, optional zips |
| Common fabrics | Brushed fleece, loopback jersey | French terry, brushed fleece, jersey |
General differences only. Define the shape by measurement in the tech pack.
Straight leg sweatpants and wide leg sweatpants have returned as a separate fit from joggers, and they deserve their own pattern block. They need more fabric, a stable hem and careful balance so the leg hangs cleanly instead of twisting.
Sweatpants Fabric: Fleece, French Terry and Loopback
Sweatpants fabric is a knitted fabric with loops on the reverse. Fleece, also called brushed-back fleece, has the loops raised into a soft pile on the inside, which makes it warm. French terry leaves the loops intact, so it feels cooler and smoother. Loopback jersey is the same structure used in lighter weights. Choose the fabric first, because it decides weight, drape, warmth and how the garment behaves when washed.
Typical sweatpants fabrics
| Fabric | Character | Typical weight (GSM, approx.) | Best for |
|---|---|---|---|
| Lightweight French terry | Cool, smooth, relaxed drape | 200–260 | Spring and summer sweatpants, loungewear |
| Mid-weight French terry | Balanced warmth and structure | 260–320 | Everyday joggers and sweatpants |
| Brushed fleece | Soft pile inside, warmer | 280–380 | Autumn and winter sweatpants |
| Heavyweight fleece | Dense, substantial, holds shape | 380–500 | Premium or streetwear sweatpants |
| Lightweight jersey | Thin, drapey, minimal warmth | 160–220 | Lounge pants and summer joggers |
Typical ranges only. Weights vary by yarn count, brushing and mill, so confirm GSM on a swatch.
Seen on one scale, the bands overlap heavily, so a heavy French terry can weigh more than a light fleece. Compare handfeel and warmth on swatches, not weight alone.
Typical sweatpants fabric weight bands
GSM bands
Typical ranges that vary by product and factory. Not a specification.
For a deeper comparison of the two main structures, see our French terry vs fleece guide. The weight you choose for a pair of sweatpants may differ from the hoodie weight, so decide with the whole set in mind.
Fleece vs French Terry for Sweatpants
The matrix below compares the main structures across the properties that matter for trousers. Heavier cloth feels premium and holds shape, but it is warmer and slower to dry, and it makes cuffs and waistbands bulkier.
Sweatpants fabrics compared
1 dot = low, 5 dots = high
| French terry | Brushed fleece | Heavy fleece | |
|---|---|---|---|
| Warmth | ●●●●● | ●●●●● | ●●●●● |
| Softness inside | ●●●●● | ●●●●● | ●●●●● |
| Drape | ●●●●● | ●●●●● | ●●●●● |
| Shape retention | ●●●●● | ●●●●● | ●●●●● |
| Pilling resistance | ●●●●● | ●●●●● | ●●●●● |
| All-year wearability | ●●●●● | ●●●●● | ●●●●● |
Indicative ratings based on typical fabric/process characteristics, not laboratory results.
Brushed surfaces pill more readily because loose fibre ends migrate and tangle. Our guide to fabric pilling explains how yarn, knit density and finishing change the outcome, and what to ask for in testing.
Cuffs, Hems and Waistband Rib
The cuff and waistband are knitted components attached to the body of the garment, and they decide how the product wears. A cuff must stretch enough to pass over the heel and recover enough to hold the leg. A waistband must sit flat, hold the cord and stay in place without rolling.
- Cuff rib is commonly a 1x1 or 2x2 rib, often with a small amount of elastane for recovery. Specify the rib, the finished depth and the cuff length when relaxed.
- Cuff attachment is usually an overlock seam, sometimes with a coverstitch to secure the allowance.
- Open hem styles use a double turned hem with a coverstitch, or a plain overlocked edge for a raw look.
- Waistband can be a self-fabric band, a ribbed band, or a separate elastic enclosed in a casing.
- Elastic should be selected for width, recovery and softness. Wide, soft elastic reduces digging into the body.
Cuff stretch-out and waistband roll are the most common faults, and both usually come down to mismatched components. A rib that is too loose, an elastic that is too weak or a casing that is too wide will all let the garment lose shape.
Drawcord, Eyelets and Waistband Details
A drawcord lets the wearer adjust the waist, but it also adds components: eyelets, a channel, a cord and cord ends. Keep the detail proportionate to the style. Wide, flat cords suit casual sweatpants, and round cords suit sporty joggers. Our drawstring guide covers cord types, aglets and eyelets in detail.
Eyelets should be reinforced with interfacing or a woven tape so they do not tear through the knit. Metal eyelets look neat but can rust or mark in wash, so test them. A stitched eyelet, or a hole stabilised with tape, gives a softer look. If the sweatpants are for children, drawcords on children clothing are subject to safety rules, so check the current UK requirements with the factory, a test house or Trading Standards before design is finalised.
Pockets, Rise and Leg Shape
Pocket choice affects both comfort and cost. Side-seam pockets are fast to sew and keep the front clean. Slanted pockets are more comfortable and give the hip a shaped look. Back pockets add function and a place for branding. Zip pockets add security but need a stable fabric and a well-aligned opening.
Common sweatpants pocket and rise choices
| Detail | Option | Notes |
|---|---|---|
| Front pockets | Side seam, slanted, or kangaroo style | Side seam is simplest; slanted improves comfort and shape |
| Back pocket | Single patch or welt with optional zip | Needs interfacing and bar tacks at corners |
| Zip pockets | Side zip or cuff zip | Zips need stable tape and should lie flat in knit fabric |
| Rise | Mid rise or higher, elasticated or drawcord waistband | Higher rise suits wide-leg sweatpants; check gusset and seat room |
| Leg shape | Straight, tapered or wide | Wide leg needs more fabric and a stable hem |
Descriptions are general. Add flat sketches and measurements to the tech pack.
Rise matters on knit trousers because the stretch of the fabric hides fit errors that would show on woven trousers. Even so, specify the front and back rise, thigh and leg opening measurements. Our loungewear guide explains how rise and comfort interact in relaxed ranges.
Seam Finishes: Overlock and Coverstitch
Knitted trousers are sewn with stitches that stretch with the fabric. The main body seams are normally joined with a multi-thread overlock, which trims the edge, joins the pieces and finishes the raw edge in one operation. Hems are usually finished with a coverstitch, which gives a neat double line on the face and a chain on the reverse. Flatlock seams are used where a flat, low-bulk seam is needed.
The wrong stitch for the fabric can cause popped seams or puckering, so match the stitch to the knit and the use. Our overlock vs coverstitch vs flatlock guide explains each option and what to write in a tech pack. Ask the factory to confirm seam strength and elasticity on a wash-tested sample.
Common Faults in Sweatpants and Joggers
Most problems with sweatpants appear after washing and wearing, which is why a wash test belongs in every sampling plan. The table lists the faults you are likely to meet and the usual remedies.
Typical faults and checks
| Fault | Typical cause | How to prevent it |
|---|---|---|
| Cuff stretch-out | Rib too loose, low recovery yarn | Specify rib structure, elastane content and recovery check |
| Waistband roll | Thin band, weak elastic, wide casing | Match band thickness and elastic width to fabric weight |
| Leg twist after wash | Skewed fabric, poor cutting or knit torque | Check fabric torque and cut on grain |
| Pilling | Short fibres, loose knit, brushed surface | Ask for combed yarn, tighter knit and a pilling test |
| Shrinkage | Fabric not pre-relaxed | Test shrinkage and allow in the pattern |
| Eyelet pull-through | No reinforcement behind the eyelet | Add tape or interfacing and test |
General causes. Specific issues vary with fabric and sewing.
Torque, where the leg spirals around the body after washing, is a known issue with some knits. Ask the mill about fabric torque control, and request a wash test on a finished pair.
Sweatpants Spec Checklist and Sizing
A good specification covers the garment shape, fabric and trims in the same document. Measurement points typically include waist (relaxed and stretched), hip, front and back rise, thigh, knee, leg opening or cuff, inseam and outseam. Grade sizes by a rule agreed with the factory, and check cuff and waistband sizing at each step, because ribs do not scale like body panels.
Sweatpants tech pack checklist
- Fabric: fibre, structure, GSM, brushing level and shrinkage target.
- Fit block, reference pair and measurements per size.
- Waistband type, width, elastic and drawcord details.
- Cuff rib type, finished depth, relaxed length and recovery.
- Pocket types, positions and reinforcement.
- Seam types and stitch types for body, hem and cuff.
- Colour reference, dye method and shade tolerance.
- Labels, branding and placement.
- Packing, folding and any children safety requirements to confirm.
Add sketches with callouts for each detail on the list.
Our guide to how to make a clothing tech pack explains the format in full.
Matching Sets and Sampling Sweatpants
Sweatpants are often sold with a hoodie or sweatshirt as a set, which adds a requirement: both pieces must match in shade, handfeel and shrinkage. Specify the same fabric and dye lot for both, and approve them together at pre-production. Wash both pieces together in the test, since different weights of the same fabric can shrink at different rates.
Sweatpants sampling steps
- 1Brief and fabricShare the reference, shape, fabric target and any matching top.
- 2First sampleThe factory makes a pattern and a sample in the intended fabric or a close match.
- 3Fit and component checkReview fit, cuff, waistband, pockets and drawcord.
- 4Wash testWash the sample, then compare measurements, shade and handfeel with the original.
- 5Pre-production approvalSign off the final sample as a set before bulk begins.
Sampling is how fit, fabric and construction are agreed before production.
A matching set also needs consistent sizing between top and bottom, so share the size chart for both pieces at the same time.
How Ruhrose Approaches Sweatpants
Fleece and French terry sweatpants and joggers are core to the jersey and hoodie work Ruhrose does for UK buyers, with production in Bangladesh. We sample the fabric, cuff, waistband and fit first, test the wash behaviour, and agree the matching hoodie in the same round. If you plan a full co-ord, our loungewear manufacturing guide shows how to plan the set.