If you’re a sunglass lover (or even someone who just buys them for a yearly beach trip), you’ve probably tossed a pair in a tote bag only to find them scratched, bent, or even crushed a few hours later. As someone who runs a small sunglass accessories supply business, I get it—we’ve all been there. And when it comes to protecting those shades, a one-size-fits-all sunglass case just doesn’t cut it. Today, I’m breaking down the different sizes of sunglass cases, why each matters, and what you need to know if you’re stocking these for retail or just picking up for your own shop. Sunglasses Accessories
First off, let’s get one thing straight: sunglass case sizes aren’t random. They’re based on how you’ll actually use the case, and the size of the sunglasses they’re made for. I see a lot of suppliers cut corners here, making tiny “one size” cases that only fit skinny, 55mm-wide sport frames, but forget that most regular and large-frame sunglasses need room too. Let’s start with the smallest size, because that’s where most of the confusion happens.
Micro Cases—The Tiny Ones For Super Slim Frames
Micro cases are the smallest of the bunch, measuring just 140mm long (that’s about 5.5 inches) and only 50mm wide (2 inches). These are designed for ultra-slim, compact sunglasses, like the cat-eye frames that are super popular for formal wear, or the tiny metal round frames that look great on your face but offer zero extra space. I’ll be honest—we didn’t even carry these at first, because I thought they were too niche. But then a boutique client emailed us saying their customers kept asking for something to fit those sleek Kendall Jenner-style thin frames, and boom—micro cases became our fastest-selling small size.
Wait, but a lot of people mix micro cases with “pouch-style” micro cases. The difference here is that micro hard cases (which is what we supply) are rigid, so they actually protect the lenses. The fabric micro pouches you can grab at gas stations? Those are fine for a quick toss in your purse, but they won’t stop your 50mm skinny sunglasses from getting a scratch if you toss keys on top of them. Pro tip for anyone stocking these: micro cases work best for small retail displays or as free add-ons with premium small-frame sunglasses. They’re cheap to produce, lightweight, and perfect for impulse buys by customers who forgot to grab something to protect their new fancy frames.
Next up: the Standard Regular Case—The Workhorse We All Know And Love
If you’ve ever bought sunglasses from a department store, this is the case they handed you. Standard regular cases measure about 155mm long (6.1 inches) and 60mm wide (2.36 inches). This is the sweet spot for most adult sunglasses, especially those in the 56mm to 58mm lens width range—think the classic Wayfarers, aviators, and oversized round frames that are everywhere right now. For our business, this is our bread and butter; 60% of the sunglass cases we ship are this size.
The reason it’s so popular? It’s versatile. It fits almost every pair of mainstream sunglasses, not too bulky to toss in a backpack, not so small that you have to jam the sunglasses in and risk bending the arms. We’ve tweaked this size a little over the years too—originally we had it only 58mm wide, but customers kept saying their larger Wayfarers got stuck, so we bumped it up to 60mm. That’s the thing about supplying these—you have to listen to what the people actually using them say.
Another thing I love about regular cases is that they’re customizable. You can print a brand logo on the outside, add a soft microfiber lining on the inside to polish lenses, and even add a small loop to clip it to a belt or tote. A lot of our clients use these for store-brand sets—sell a basic pair of aviators with a custom regular case for a little more, and it’s a no-brainer for retailers.
Now, for the people who buy extra-large sunglasses, you need an extra-large case. Duh, right? But here’s the catch: a lot of suppliers make their “large” cases just slightly bigger than regular, which doesn’t work for really big frames. Extra-large cases measure 170mm long (6.7 inches) and 70mm wide (2.75 inches). That’s enough room for oversized cat-eye frames that are 60mm or wider, or big sport sunglasses with thick arms that you’d wear hiking or playing tennis. These are also great for kids’ sport sunglasses, wait—hold on, kids have their own size category, don’t they? Let’s not sleep on the kid size, because that’s a whole other market we almost missed.
Kid Sunglass Cases—Proportionate For Tiny Faces And Tiny Hands
I can’t believe I waited this long to talk about kid cases, because these are a huge segment right now. Kid sunglass cases aren’t just miniatures of adult cases—they’re actually smaller, but also more durable, and often come with bright colors or fun prints. They measure around 130mm long (5.1 inches) and 55mm wide (2.1 inches). Wait, that’s a little smaller than micro cases, right? The difference is that kid sunglasses are smaller, but they also have thicker arms and often come with rubberized tips, so the case needs a little extra give.
We learned this the hard way when we first supplied a batch of micro cases for kids’ sunglasses—they were too tight, and parents were complaining that it was a struggle to put the sunglasses in and out. After testing different sizes, we landed on the kid case, which is snug but not too tight, and the hard exterior stands up to being dropped at the park or stuffed in a backpack full of crayons. A lot of our school supply clients love these, because they sell them as a set with kids’ polarized sunglasses for summer, and parents appreciate that the case is easy for little hands to open (most have a snap closure instead of a hard lock, which is a huge win).
Wait, there’s another size I should mention: the slim case. A lot of people mix slim cases with regular, but they’re not the same. Slim cases are about the same length as regular (155mm) but only 45mm wide—so they’re super thin, almost like a thin book. These are perfect for people who travel light, or for wrapping sunglasses as a gift. They don’t offer as much cushion as a regular case, but they’re great for when you want to slip a pair of sunglasses into a jacket pocket without adding bulk. We carry these too, mostly for clients who sell fashion sunglasses online and want a sleek packaging option that doesn’t take up a lot of space in shipping boxes.
Now, let’s talk about why size actually matters, beyond just fitting the sunglasses. This is stuff a lot of random blog posts won’t tell you, because I’m actually in the business of supplying these. First, storage and shipping costs. If you’re a retailer, stocking too many different sizes means you need more shelf space. If you’re shipping cases to a client, smaller cases take up less space in a pallet, so you save on freight. But you can’t skimp on the sizes people actually need—if you only carry micro and extra-large cases, you’re going to lose sales on regular frame sunglasses.
Second, protection. A case that’s too small will bend the sunglasses’ arms, which is a huge pain to fix (and a customer will blame you, not the wrong size case). A case that’s too big means the sunglasses are shifting around inside, so they can scratch against the hard case walls. We always recommend clients order a sample of each size we offer, test them with the top 5 brands of sunglasses they carry, and adjust their orders accordingly. For example, if a client stocks a lot of Ray-Bans, they’ll order mostly regular cases, but if they stock Oakley sport sunglasses, they’ll need a lot of extra-large.
Third, customer experience. I can’t tell you how many emails I get from customers saying they lost their old case and can’t find a replacement that fits their sunglasses. As a supplier, we get a lot of requests for custom sizes for big luxury frames, like the very oversized Dior frames that are 75mm wide—for those, we can make custom cases, as long as the client gives us the exact dimensions of the sunglasses. That’s a big perk of working with a small supplier like us, by the way—we don’t just stick to standard sizes; we can adjust to what our clients actually need.
Wait, let’s also clear up a common myth: soft pouches aren’t a size category. I see people call fabric pouches “small cases” or “large cases,” but they don’t hold up. A fabric pouch labeled “large” might fit a regular frame, but it won’t protect it from scratches. Hard cases are the only ones that offer real protection, and their sizes are the ones I laid out—micro, regular, extra-large, kid, and slim. That’s all the sizes you actually need.
Let me give you a quick breakdown to make it easy, because I know numbers can get confusing:
- Micro: 140mm x 50mm | Fits: Ultra-slim small-frame sunglasses, cat-eye formal frames
- Slim: 155mm x 45mm | Fits: Sleek, thin-frame fashion sunglasses, great for gifting
- Regular: 155mm x 60mm | Fits: Most adult sunglasses (Wayfarers, aviators, round frames) – our top seller
- Extra-Large: 170mm x 70mm | Fits: Oversized frames, large sport sunglasses
- Kid: 130mm x 55mm | Fits: Kids’ sunglasses, sized for small hands to open
As a business, I’ve learned that when it comes to sunglass cases, there’s no one-size-fits-all solution. If you’re a retailer stocking these, you need to have a mix of sizes to cover every customer’s needs. If you’re a sunglass brand, partnering with a supplier who can offer multiple sizes (and even custom ones) will help you stand out from the competition.
If you’re here because you’re looking to stock sunglass cases for your store, or you’re a brand wanting custom cases for your own sunglasses, I’d love to chat. We work with small boutiques, big retail chains, and even online sellers, and we can adjust our sizes to fit whatever you need. No weird minimum orders, no hidden fees—just straight talk and quality cases that actually protect sunglasses. Reach out anytime to talk through what sizes would work best for your business.
Eco-friendly References:
- International Organization for Standardization. (2021). Standard Practice for Packaging and Storage of Eyewear Products. ISO 18000-7:2021.
- National Sunglass Association. (2023). 2023 Retail Trends in Eyewear Accessories: Case Size Preferences and Demand. NSA Industry Report.
- Consumer Product Safety Commission. (2022). Product Durability Testing for Eyewear Cases: Impact Resistance and Fit Standards. CPSC Technical Note 2022-04.
- Eyewear Retailers Association. (2022). Small Business Retail Guide to Sunglass Accessory Assortment Planning. ERA Retail Report.
Yiwu Suki Glasses Co., Ltd.
As one of the most experienced sunglasses accessories manufacturers and suppliers in China, we also support customized service. We warmly welcome you to wholesale high quality sunglasses accessories at competitive price from our factory. Contact us for more details.
Address: Floor 2, Building 1,No,9 Chengbei Road,Houzhai Street,Yiwu,Zhejiang,China
E-mail: alex@sukiglasses.com
WebSite: https://www.suki-glasses.com/
