Creating your own swimwear is an exciting project, but choosing the right fabric is key to getting a comfortable, stylish, and long-lasting swimsuit. Whether you’re sewing a bikini, one-piece, or rash guard, the fabric you choose will determine how well it fits, stretches, and holds up to all your activities.
What to Look for in Swimwear Fabric
Swimwear fabrics need to be:
Stretchy: Look for at least 50% four-way stretch to ensure a snug, comfortable fit.
Quick-drying: Fabrics that hold moisture will feel heavy and uncomfortable.
Durable: Strong fibres prevent sagging and wear.
Top Fabrics for Swimwear
Nylon Spandex (Polyamide Spandex)
If you’re looking for a classic, go-to swim fabric, this is it! Nylon spandex is soft, stretchy, and fits like a dream. It moves with your body and gives that smooth, second-skin feel—perfect for bikinis, one-pieces, and even swim leggings.
Pros: Soft, lightweight, and dries quickly
Cons: Slightly less chlorine-resistant than polyester blends
Stretch: 4-way | 80-90% cross-grain and straight-grain
Polyester Spandex
If you’re planning to swim a lot—as in, lap after lap in the pool or back-to-back beach days—this is the fabric you need. Polyester spandex holds up like a champ against chlorine and UV rays, meaning your swimsuit will stay vibrant and stretchy for the long haul.
What we’d grab? Swim Print | Porcelain Rhapsody. This print has such a soft romantic vibe and just the right amount of stretch to keep things comfy.
Why you’ll love it: Long-lasting, fade-proof, and feels great against the skin.
Keep in mind: It’s not as silky-soft as nylon, but it makes up for it with durability.
Textured Swim Fabrics
Want to take your DIY swimwear to the next level? Textured fabrics are where it’s at. Whether it’s ribbed, waffled, or jacquard, these fabrics add a unique, high-end look to your swimsuit.
What we’re obsessed with?Swim Basic Rib | Marine. Navy is a timeless, elegant color that never goes out of style.
Why you’ll love it: Looks stylish, fits like a glove, and makes your DIY swimsuit feel designer-level.
Pro tip: Ribbed swim fabric provides amazing compression by hugging the body with its structured texture, creating a flattering and supportive fit.
Don’t Forget the Lining!
No one wants a see-through swimsuit, right? For a pro finish, always add a good lining. It keeps things secure, adds comfort, and makes sure your swimsuit lasts!
What we’d use? Swim Lining | Nude . It’s lightweight and stretchy enough to move with you.
Why you’ll love it: Gives your swimsuit that polished, high-quality feel.
Pro tip: Use Power Mesh if you're looking for tummy control in a one-piece!
Where to Buy High-Quality Swimwear Fabrics
At Fabric + Flow, we offer a curated selection of high-performance swimwear fabrics designed for DIY creators. Whether you’re making a classic one-piece or an on-trend bikini, our fabrics are handpicked to provide the best fit, durability, and style.
Community Spotlight: Meet Cortney — @s.is.for.sew
We’ve been lucky to partner with Cortney — known on Instagram as @s.is.for.sew — for the past few years, and it’s truly been a joy watching her beautiful makes come to life. Her sewing projects are always thoughtful and full of detail, but what we especially love is the romantic, dreamy vibe she brings to her pieces(and her love for denim). Whether she’s sewing with florals, ruffles, or soft silhouettes, Cortney has a way of making every garment feel like a love letter to slow fashion and personal style.
To celebrate her inspiring presence in the sewing community, we asked Cortney a few questions about her journey — how she got started, which makes stand out as favourites, and what she’s looking forward to stitching next.
Tell us how you got started sewing!
"I have always loved crafts, but I didn’t really get into garment sewing until my husband bought me a sewing machine for Christmas in 2017. Once I started — and found the Instagram sewing community — that was it."
What are some of your favourite makes so far?
"It’s a toss-up between my Vogue trench coat and my recent denim jacket. Both have a lot of detail, are worn frequently, and feel like a big accomplishment. Of course, my favourite thing to make is jeans. I love the process."
Is there anything you’ve been hesitant to try?
"I haven’t really gotten into quilting or shoemaking. I have made a few quilts — it’s a different type of craft than garment sewing, to me!"
What’s a sewing goal you’ve set for yourself this year?
"My goal this winter is to take all my scraps and make the ultimate quilted jacket. I’m just about ready to get into a long, cozy project that will clear out my scrap basket."
(Anyone else read that and think YES - this we need to see!? A quilted scrap jacket is such a thoughtful blend of sustainability and creativity — and with Cortney’s signature style, we know it’s going to be something special.)
Cortney’s Top Tips for Sewing Denim
With jeans being one of her favourite things to make, we couldn’t resist asking Cortney for her best advice when it comes to sewing denim — and of course, she delivered with some super practical, real-world tips:
"Here are my top tips:"1. Use the heaviest needle you can — I usually go with a 110/18 denim needle.2. Steam, pressing, and hammering thick layers really help make sewing easier. A humper-jumper (not sure what else they’re called, haha) is super handy, too — or even a folded-up piece of paper in a pinch.3. I don’t use specific topstitching thread — just regular thread, with the same colour in the bobbin and top. The only thing I change between topstitching and regular seams is the stitch length. I always test on a scrap first to be sure, but 98% of the time, it works great for me!
Cortney’s Go-To Jean Patterns: (all 3 work with non-stretch denim)
Just My Luck Jeans - offers a virtual sewing workshop if you want more guidance
Helene Jeans - based on heritage style jeans
Gizeh Trousers - balloon fit with cool finishes
If you enjoyed getting to know Cortney, be sure to follow her on Instagram at @s.is.for.sew and show her some love. Her makes are always full of care, creativity, and that signature style we’ve come to love. She’s a true source of inspiration in the sewing community.
Ready to sew up your own denim project - check out our curated Denim Collection!
Flecks, No Stretch, All Flex: Recycled Denim for DIY Sewing Projects
Let’s talk denim — but not the stiff, overdone kind. We're talking recycled denim fabric that brings texture, sustainability, and a serious style upgrade to your next DIY sewing project.
This isn’t just fabric — it’s a vibe. Created using recycled cotton denim fibres, this eco-conscious material is as stylish as it is sustainable. Whether you're making a statement piece or adding edge to a wardrobe staple, this fabric delivers.
Available in three versatile shades:
Acid Wash – bold, bright, and unapologetically eye-catching.
Washed Grey – neutral with a twist of cool.
Washed Black – sleek, moody, and always on-trend.
Each colour is flecked with tones from different recycled denim, creating a confetti-meets-industrial texture — perfect for anyone who wants their fabric to tell a story.
Fabric Details:
100% cotton denim
Medium-weight, non-stretch
Durable, textured, and ideal for structure
Perfect for:
Sewing denim jackets
Making sustainable bags
Crafting home decor like cushions
Creating modern overalls and pants
This recycled cotton denim is what happens when fashion, function, and values collide. Ready to sew something that looks good, feels good, and does good?
Check out our entire Denim Collection.
Ribbing vs Self-Facing: What’s the Big Deal?
Let’s talk garment finishing. You’ve just made a killer sweatshirt or tee, and now it’s decision time: finish the neckline and cuffs with a self-facing or go pro with ribbing? If you’ve ever wondered whether it’s worth reaching for that 1x1 or 2x2 tubular rib, spoiler alert—it totally is.
Here’s why ribbing fabric isn’t just a detail—it’s a game-changer.
The Ribbing Advantage: Clean, Professional, and Built to Last
🔹 1. Shape Retention That Stays Snatched
Rib knit fabrics—especially the classic 1x1 or 2x2—are like the shapewear of the sewing world. They stretch and bounce back like a dream. That means your cuffs won’t bag out after one wear, and your neckline won’t suddenly look like it’s been stretched by a rogue toddler.
Self-facing with the same main fabric? Not so much. Stretch is limited, recovery is minimal, and let’s be honest—it can start to look homemade real fast.
🔹 2. A Tailor-Made Look (Even If You DIYed It)
Tubular ribbing has a neat, clean finish that screams “I paid a pro for this” even if you stitched it up on your kitchen table. The visible texture of 1x1 or 2x2 ribbing gives garments dimension and detail. It doesn’t just blend in—it elevates.
Compare that to self-facing, which can look a bit...flat. Meh.
🔹 3. Built for Movement
Because of their knit structure, ribbed fabrics move with the body without distorting the shape of the garment. It’s like a hug that never sags.
That’s thanks to their structure—alternating knit and purl stitches that create built-in elasticity and rebound.
No Ribbing? No Problem — Self-Facing to the Rescue
That said, ribbing isn’t the only way to get a clean finish—especially if you're working from your fabric stash or aiming for a sleeker, less structured look.
When ribbing isn’t in your fabric stash or doesn’t suit the look you’re going for, self-facing is a reliable, accessible alternative that still gives a clean, structured finish. A self-facing uses the same fabric as your garment, offering seamless continuity in color, weight, and drape. It lays flat, minimizes bulk, and blends discreetly with the garment—especially valuable in dressier, woven, or lighter-knit pieces where you want a sleek, invisible finish.
Though it may not offer the bounce-back elasticity or sporty texture of 1×1 or 2×2 ribbing, self-facing provides a dependable, familiar finish that’s especially useful when ribbing isn’t on hand. It's functional, understated, and perfectly suited to when you want your finishing details to stay subtle and seamless.
Wait—What Even Is 1x1 vs 2x2 Ribbing?
Great question.
1x1 ribbing alternates one knit and one purl stitch. It’s tighter, stretchier, and has a finer finish. Perfect for tighter neckbands or sleeve cuffs.
2x2 ribbing alternates two knit and two purl stitches. It’s slightly bulkier with a more casual look—ideal for waistbands or oversized pieces.
In both cases, they’re way more flexible than using self-fabric bands. And they just sit better. No rolling, no rippling, no fuss.
But Wait—There’s More! Ribbing Beyond the Basics
Tubular ribbing isn’t just for neckbands, cuffs, and waistbands. Here are a few ways to get creative:
Tank Top Straps: Use ribbing for comfy, stretchy straps that hold their shape.
Crop Top Hems: Add a ribbed hem for a sporty, snug finish that pops.
Baby Clothing: Soft ribbing edges keep garments gentle and stretchy for wriggly little humans.
Beanie Brims: 2x2 ribbing gives hats that cozy, snug edge without pinching.
The Whole Garment: Yep, ribbing isn’t just a trim—go big! Make an entire fitted tank, a snug crop top, or even a bodycon dress. The stretch and bounce-back are ideal for curve-hugging styles.
Visual Interest Panels: Insert ribbing panels into tops, hoodies or joggers to add texture and extra strength. Think waist side panels that flex with you, or leg inserts that give your joggers a more athletic vibe.
So don’t box your ribbing in. Let it stretch (literally) into your designs. It’s functional and fashionable—and honestly, it’s been waiting for its main character moment.
Cotton Ribbing vs Bamboo Ribbing: Let’s Talk Textures & Tech Specs
So you’re sold on ribbing, but now you’re faced with another decision—cotton or bamboo?
Let’s break it down:
Bamboo Ribbing:
Softer than your favorite hoodie. Seriously. It’s buttery and silky.
More fluid drape, making it ideal for lighter garments.
Higher stretch percentage—often with spandex added.
Lower recovery than cotton blends. Feels amazing, but may not hold shape as long over time.
Sustainably grown, antibacterial, and moisture-wicking. Your skin and the planet will thank you.
Cotton Ribbing:
Crisper feel, more structured.
Lower stretch but better recovery—so it keeps its shape longer.
Durable and better for high-stress zones like waistbands and cuffs.
Holds up to frequent washes like a champ.
Pro Tip: Want the best of both worlds? Look for cotton-bamboo blends with added spandex or elastane.
Wrap-Up: Ribbing Is the MVP Your Sewing Needs
Whether you’re a beginner or a seasoned stitcher, investing in ribbing fabric for your garment finishes will instantly level up your work. You’ll get better shape retention, longer-lasting wear, and a more professional look that self-facing just can’t match.
Plus, once you start playing with ribbing beyond the basics—you're gonna be hooked. (Trust us.)
Ready to Rib It Right?
Browse our collection of premium cotton and bamboo ribbing fabrics, available in 1x1 and 2x2 knits in a range of colours. Whether you’re making streetwear or loungewear, we’ve got the perfect rib for your next masterpiece.