If you've been researching Thinx period underwear, chances are Eco Period has come up as an alternative too. Thinx is one of the most recognised names in the category, and a lot of Australian shoppers land on our site after comparing the two. So let's make that comparison an easy one.
This isn't about talking anyone out of a brand they already love. It's about giving you the real detail, materials, range, price and ownership, so you can choose with confidence.
Eco Period is a small, Australian owned and operated period care brand based in the Sunshine Coast hinterland, founded in 2018. Thinx is a much larger US brand with a wider global footprint and a broader marketing budget. Both make period underwear that's meant to replace disposables. Where they differ is in materials, range focus and who's actually behind the label.
If organic cotton next to skin, Australian ownership and a genuine founder story matter to you, Eco Period is likely the better fit. If you want the widest possible range from a bigger international brand, Thinx has scale on its side.
| Eco Period | Thinx | |
|---|---|---|
| Ownership | Australian owned and operated | US owned, sold internationally |
| Organic cotton range | Yes, Orgaknix range uses organic cotton next to skin | Varies by product line, check current listings |
| PFAS-free | Yes, PFAS-free across the range | Varies by product line, check current listings |
| Period swimwear | Yes, including chlorine resistant Racerback Pro | Limited swim range |
| First Period Kit | Yes, purpose built for first periods | No direct equivalent |
| Price (AUD) | From $15 (G-string) to $99 (bundles) | Higher landed cost for Australian shoppers due to import and currency |
| Founder story | Founder hands on and personally uses the products | Founder team, larger corporate structure |
We haven't included a side by side PFAS claim for Thinx here. Their materials and testing disclosures vary by product line and change over time, so rather than guess, we'd encourage you to check the current specs on whatever Thinx style you're considering directly with them. We can only speak confidently to what's true of our own range: Eco Period products are PFAS-free.
This is the detail that matters most for comfort and confidence. Eco Period's Orgaknix range puts organic cotton next to skin, with a PFAS-free construction throughout. Our Invisi Seamless range uses a recycled nylon outer with a cotton internal gusset, for days you want a smooth line under clothes. Our newer Hemp range blends hemp, tencel and organic cotton, and is naturally antibacterial.
Thinx has expanded its materials over the years across multiple sub brands and product lines. If a specific fabric or finish matters to you (organic cotton, for example), check the product page for the exact style you're looking at, because it can differ across their range.
Eco Period's range covers everyday period underwear (Orgaknix, Invisi Seamless, Hemp), period swimwear (Racerback Pro, Diamondback, Salt and Bloom), a First Period Kit for first timers, reusable cloth pads and yoni care. It's a tighter, more curated range than Thinx, which means less choice but also less decision fatigue when you're just trying to work out what you actually need.
Thinx has a broader catalogue and more style variety, particularly in everyday underwear. If you want dozens of cuts and colours to choose from, that's where their scale shows.
Eco Period pricing in AUD runs from $15 for a single G-string through to $99 for bundle packs, with most everyday styles sitting between $22 and $32. Because we're an Australian business, there's no currency conversion or import markup to account for.
Thinx is priced in USD as its base currency, so Australian shoppers are usually paying a landed price that includes currency conversion and, depending on how you order, shipping and duties. It's worth checking the total cost in AUD before you compare pricing directly.
This is the part that's easy to overlook when you're comparing spec sheets. Eco Period is run by Danielle, who started the brand from home in 2018 and still uses the products herself. It's 100% Australian and female owned, and one of the first period underwear brands in Australia to insist on organic cotton in its range.
Thinx operates at a different scale, with a larger team and corporate structure behind it. Neither approach is wrong, it just means a different kind of relationship with the brand you're buying from.
Eco Period tends to be the better fit if you want organic cotton next to skin, you'd rather support an Australian owned and operated business, you're shopping for a teen and want a First Period Kit built specifically for that moment, or you want period swimwear alongside your everyday underwear from the same range.
If you want the widest possible range of cuts and colours from an established global brand, or you're already shopping the US market and currency conversion isn't a factor for you, Thinx may suit you better. That's a genuine call, not every shopper needs or wants what Eco Period offers.
Reusable period underwear is reusable period underwear. Whichever brand you land on, you'll get the same core benefits: less single use waste, no more running to the shops mid cycle, and underwear that works quietly in the background of your day. If you do decide Eco Period is the better fit, our Orgaknix range is the easiest place to start, and our First Period Kit is purpose built if you're shopping for a daughter's first period.
