Training Journal
27 articles tagged “fabric”-
4 min read
What GSM Should Activewear Be?
Most activewear sits between 180 and 250 g/m². Here is the median, the range and the category breakdown from 109 garments that publish a mill-spec fabric weight — and how to read the number before you buy.
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3 min read
Four-Way Stretch Explained: Why It Matters in Leggings
What four-way stretch actually means, how knit construction creates it, and why it matters more than fabric weight for squats, lunges and floor work.
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3 min read
Spandex, Lycra and Elastane: Same Thing, Different Names
Spandex, Lycra, and elastane are the same fiber under different regional and brand names. What the percentage on your label actually controls.
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3 min read
Nylon (Polyamide) in Activewear: Why Premium Brands Use It
Why nylon shows up in higher-end leggings and sports bras, what it does differently from polyester, and how the nylon-spandex ratio changes feel.
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3 min read
Polyester in Activewear: Properties, Pros and Cons
What polyester actually does in activewear: real wicking and durability advantages, where it falls short, and how HIVOLT blends it with spandex.
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3 min read
GSM in Clothing: What Fabric Weight Numbers Mean
What GSM actually measures, how it maps to fabric feel from 130 to 330 g/m², and how to use the number when choosing activewear.
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3 min read
Flatlock Seams: The Detail That Prevents Chafing
Chafing usually starts at a seam, not the fabric itself. Here's how flatlock construction works and what else actually prevents rubbing.
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3 min read
What Is Moisture-Wicking Fabric and How Does It Work?
How moisture-wicking fabric actually moves sweat away from skin, the fiber science behind it, and what to check on a label before you buy.
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3 min read
UPF and Sun Protection in Workout Clothing
UPF depends on weave density, fiber, color and gsm - not just coverage. Here's how sun protection actually works in training fabric.
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3 min read
Recycled Polyester in Activewear: Honest Pros and Cons
Recycled polyester performs almost identically to virgin polyester in training gear. Here's the honest breakdown of what changes and what doesn't.
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3 min read
Jacquard Knit Activewear: What It Is and Why It Breathes
Jacquard knit builds airflow directly into the fabric pattern using varied yarn density. Here's how the weave works and where HIVOLT uses it.
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3 min read
Compression Fabric: What It Does for Performance and Recovery
Compression fabric works through graduated tension and elastane ratio, not magic circulation claims. Here's what the evidence actually supports.
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4 min read
Squat-Proof Leggings: How Opacity Really Works
Opacity in leggings comes from yarn density and gsm, not stretch. Here's what actually makes fabric squat-proof, with real weights and blends.
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4 min read
Anti-Odor Activewear: How It Works and Its Limits
Why synthetic training gear smells better, longer, than cotton - and where fiber choice alone stops being enough. Real fabric numbers inside.
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4 min read
Breathability in Workout Clothes: What Actually Creates It
Breathability isn't a marketing word - it's fiber, weave, and weight. Here's the real science, with actual gsm and blend numbers.
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3 min read
Nylon vs Polyester Leggings: The Real Difference
Nylon feels softer and stretches more; polyester dries faster and holds color longer. See the real hand-feel and durability difference in leggings.
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4 min read
Cotton Blends in Loungewear: When 28% Cotton Is the Point
Why a 28% cotton, 72% polyester blend is a deliberate choice in loungewear, balancing soft hand-feel with shape retention.
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3 min read
Seamless vs Flatlock Seam Activewear: Durability and Comfort
Seamless construction knits the garment in one piece with no seam to chafe; flatlock stitching keeps traditional panels but flattens the seam against friction. Here's the honest trade-off.
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3 min read
Opacity Ratings: How Brands Test Squat-Proof Claims
There's no regulated opacity standard for leggings. See how brands actually test squat-proof claims and what to check before you buy.
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3 min read
Polyamide vs Spandex: What These Fabric Labels Actually Mean
Polyamide and spandex show up together on almost every fabric tag, but they do completely different jobs. Here's how to actually read a blend percentage.
Reading time is an estimate: words in the article divided by 220 per minute.