Sweater vs Sweatshirt: What’s the Real Difference?

I used to mix these two up all the time.

I’d say “grab a sweater” and end up pulling a fleece-lined hoodie. Or I’d buy a knitted pullover and call it a sweatshirt because it had long sleeves and felt warm. Turns out, a lot of us confuse the two—and for good reason. They look similar, they’re both cozy, and the words often get used interchangeably.

But here’s the truth: sweaters and sweatshirts are not the same thing. They’re made differently, worn differently, and even “feel” different when layered into your wardrobe.

In this guide, I’ll break down the real differences—so you can stop guessing and start choosing the right one for every outfit and occasion.

What Is a Sweater?

A sweater is a knitted garment typically made from wool, acrylic, or cotton blends. It’s designed to trap warmth through its looped yarn structure, making it a classic layering piece for cold weather.

Unlike sweatshirts—which are usually woven and fleece-lined—sweaters are made through a knit construction. This gives them their signature stretchiness, textured surface, and breathable comfort.

Common Types of Sweaters:

• Pullover Sweater: A classic over-the-head design with no opening at the front. Crewneck and V-neck styles fall under this.
  

• Cardigan: Opens at the front, often with buttons or a belt. Easy to layer and versatile for styling.
  

• Turtleneck / Mock Neck: High-neck designs that keep your neck warm. Great for minimalist or winter looks.
  

• Cable Knit Sweater: Features raised, braided textures. Cozy and often heavier.
  

• Cropped or Oversized Styles: Trend-forward takes on traditional knits, often found in fashion-forward brands.
  
  

Key Characteristics

Sweaters lean toward the dressier side of casual. They’re perfect for adding depth and texture to your look—especially when you want something warm but stylish.

What Is a Sweatshirt?

A sweatshirt is a pullover-style top made from thick cotton or cotton-blend fabric, often lined with fleece or French terry on the inside. Unlike sweaters, sweatshirts are woven, not knitted—giving them a smoother exterior and a cozy, soft interior.

Originally designed for athletes in the 1920s, sweatshirts were made to absorb sweat and provide warmth during physical activity—hence the name.

Key Construction Features:

• Outer Layer: Smooth and tightly woven cotton or blend (polyester/cotton)
  

• Inner Layer: Brushed fleece or terry loops that trap warmth
  

• Collar & Hem: Ribbed cuffs and waistbands for structure
  

• Stretch Level: Moderate (from ribbed areas), but overall less flexible than a sweater
  
  

Common Types of Sweatshirts:

• Crewneck Sweatshirt: The most iconic style—no hood, ribbed neck and cuffs
  

• Hoodie: Features a drawstring hood and often a kangaroo pocket
  

• Half-Zip or Quarter-Zip: Adds layering versatility, often sporty
  

• Oversized / Cropped: Modern cuts trending in streetwear and athleisure
  
  

Sweatshirt Summary

Sweatshirts are your go-to for comfort-first days. Whether you’re running errands or lounging at home, it’s the easiest way to stay cozy without thinking too hard about style—though plenty of modern sweatshirts are fashion-forward now.

Sweater vs Sweatshirt – Quick Comparison Table

Sometimes, the fastest way to understand the difference is to see it side by side. Here’s a breakdown of how sweaters and sweatshirts compare in all the ways that matter:

Sweaters = soft and refined warmth for layered, semi-formal looks.
Sweatshirts = relaxed and sporty warmth for comfort-focused dressing.

When to Wear Each?

Now that you know what makes a sweater and a sweatshirt different, the next question is: When should you wear each one?

Here’s how I personally decide—based on where I’m going, how I want to look, and how much warmth I need.

When to Wear a Sweater

• Work or Zoom meetings
  

• Go for a fine-knit pullover or turtleneck in neutral colors
  

• Dinner dates / Brunch
  

• Try a cable-knit with a midi skirt or tailored trousers
  

• Layering under coats in dry cold weather
  

• Wool sweaters retain warmth and look polished
  

• Semi-formal events / Casual Friday
  

• Cardigans or fitted knits easily elevate a look
  

💡 Tip: Sweaters bring texture, softness, and a “put-together” feel—even with jeans.

When to Wear a Sweatshirt

• Running errands or commuting
  

• Pair a hoodie with joggers or leggings
  

• Weekend road trips / lounging
  

• Fleece-lined crewnecks keep you warm without bulk
  

• Outdoor workouts
  

• Breathable cotton blends allow sweat to evaporate
  

• Layering under puffer coats in humid cold
  

• Fleece traps heat effectively and adds comfort
  

💡 Tip: Sweatshirts = effortlessness. The right cut (oversized, cropped, zip) can still look intentional.

Sweaters win for texture and layering; sweatshirts win for cozy and casual. Choose based on function, style, and how you want to feel.

Which One Is Warmer?

This is one of the most common questions—and the answer isn’t as simple as “sweater” or “sweatshirt.” It really depends on:

• The material
  

• The weather conditions
  

• Your activity level
  

Let’s break it down.

Sweaters: Dry Cold Insulation

Sweaters—especially those made from wool or cashmere—work best in dry, crisp winter air. The knit structure creates small air pockets that act as insulation, trapping your body heat while still allowing your skin to breathe.

They’re ideal if you:

• Spend time outdoors in cool, dry climates
  

• Want to layer without sweating
  

• Prefer a more breathable warm-up
  

💡 Tip: Wool blends are warmer than cotton or acrylic.

Sweatshirts: Humid Cold Trappers

Sweatshirts, particularly fleece-lined ones, are great for damp, humid cold or casual indoor warmth. The brushed interior traps warm air close to your body and resists wind well when layered under coats.

They’re better if you:

• Want fast, wrap-around warmth
  

• Are active outdoors (walking, commuting, etc.)
  

• Need a washable, fuss-free layer for cold weather
  

💡 Tip: Go for heavyweight fleece (12 oz and up) for maximum coziness.

The Verdict?

Both will keep you warm—but in different ways. It’s less about which one is better, and more about which suits your setting.

Common Misconceptions

If you’ve ever called a sweatshirt a sweater—or heard someone refer to a hoodie as a jumper—you’re not alone. The confusion isn’t just stylistic; it’s also cultural and linguistic.

Let’s break it down.

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"Is a Sweatshirt a Sweater?"

Technically, no.

• A sweater is always a knitted garment.
  

• A sweatshirt is a woven, fleece-lined top originally made for athletic wear.
  

They may look similar at a glance, but they’re made very differently. If it’s stretchy and textured, it’s likely a sweater. If it’s smooth and lined with fleece—it’s probably a sweatshirt.

“Sweater” vs “Jumper” vs “Sweatshirt”

Here’s where language adds to the confusion:

Bonus: Why All the Confusion?

• Fashion retailers often blur terms for SEO or marketing (“knit sweatshirt”... huh?)
  

• Influencers use them interchangeably depending on audience region
  

• The comfort category of fashion is fast-evolving—definitions are getting softer too
  

💬 My rule of thumb: If it's knit, it's a sweater. If it's fleece, it's a sweatshirt. If it has a hood, call it a hoodie and move on.

FAQ – Real Questions from Users

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What’s the actual difference between a sweater and a sweatshirt?
A sweater is knitted, often from wool or acrylic. A sweatshirt is woven cotton or a blend, lined with fleece. They differ in structure, warmth, and style.

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Can I wear a sweatshirt to work?
In casual or creative environments—yes. Go for a clean, solid-colored crewneck. In more formal offices, a fine-knit sweater is the better choice.

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Which one shrinks more: a sweater or a sweatshirt?
Sweaters (especially wool) are more prone to shrinkage if washed improperly. Sweatshirts are generally machine-safe, but still avoid high heat.

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Is a hoodie a type of sweater?
No. A hoodie is a type of sweatshirt. It’s fleece-lined, has a hood, and typically a front pocket. Sweaters don’t include hoods and are made from knit materials.

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Which is more breathable?
Sweaters, especially those made from natural fibers like wool or cotton, are more breathable than sweatshirts.

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Can I wear a sweater in summer?
Yes—lightweight cotton or linen knits work great for cool evenings. Stick to loose weaves and lighter colors.

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Why do Americans say “sweater” instead of “jumper”?
It’s a regional difference. “Sweater” is the American term; “jumper” is the British equivalent. They both refer to the same thing: knitwear.

Summary & Outfit Suggestions

Sweater or sweatshirt? There’s no universally “better” option—it all comes down to how you dress, where you’re going, and what keeps you comfortable.

Here’s the short version:

• Choose a sweater when you want a layered, textured, or more dressed-up look. They work best in dry, cool weather and for office-to-evening transitions.
  

• Go for a sweatshirt when you need instant comfort, warmth, and ease—whether you're lounging, traveling, or heading to the gym.
  
  

My personal go-to:

Sweater for dates and dinners. Sweatshirt for weekends and coffee runs.

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Want to build a wardrobe that does both?

• Explore our Pullover Sweater Collection

• Shop comfy Sweatshirts & Hoodies

• Discover more outfit tips on the Knitwear Style Blog
  
  

Whatever your style—know what you’re wearing, and own it.