If you've been shopping the xSuit lineup, you've probably noticed both the 4.0 and the 5.0 are still sitting on the site, both have glowing reviews, and both promise the same general thing: a sharp-looking suit that moves like activewear and survives a trip through the washing machine. So what's actually changed between the two versions, and does it matter for the way you'd wear it?
The short version: the xSuit 5.0 is a meaningful upgrade in fabric and construction, while the xSuit 4.0 is the more affordable performance suit that put xSuit on the map. The differences come down to material, build, look, and price. Here's how those break down.
A Different Fabric: TechWool vs. 8-Way Stretch
The most significant change between the xSuit 4.0 and xSuit 5.0 is the fabric itself. The xSuit 4.0 uses a proprietary 8-way stretch fabric built from a blend of viscose, polyamide, and elastane, designed to maximize range of motion and feel almost athletic on the body. It has a smooth, modern handfeel that leans more technical than traditional.
The xSuit 5.0 introduces TechWool, a wool blend engineered to bring the natural qualities of wool, like breathability and odor resistance, into the xSuit platform. According to xSuit's own product information, the result is a suit that looks and feels closer to a classic wool suit while keeping the performance features intact. Reviewers consistently note the 5.0 has a more textured, traditional appearance compared to the smoother synthetic finish of the 4.0.
So the 4.0 reads as a high-performance modern suit, and the 5.0 reads as a wool suit that happens to be built for real life.
Construction Differences: Stitched Seams vs. Thermo-Fused Seams
The build under the fabric also changed. The xSuit 4.0 (and the 3.0 before it) uses thermo-fused seams, a heat-bonded construction that's part of why the 4.0 is so light and flexible. The tradeoff is that you can't really tailor it beyond hemming the pants, since cutting into the fabric can disrupt those bonded seams.
The xSuit 5.0 returns to traditional stitched seams. xSuit's product pages describe the 5.0 as laser-cut and seam-sealed, and the move back to stitching is generally seen as adding structure and longevity to the garment. The fit is still engineered to work straight out of the box, but the construction feels more in line with what most people expect from a higher-end suit.
Design Details: Buttons, Lapels, and Overall Look
The visual cues are subtle but worth knowing if you care about how a suit reads in a room.
A few specific design changes between the 4.0 and the 5.0:
-
Buttons: The 4.0 features branded "x" buttons, while the 5.0 swaps in premium bullhorn-style buttons for a more classic finish.
-
Lapels: The 5.0 adds pick stitching along the lapels, a traditional tailoring detail that gives the jacket a more refined edge.
-
Silhouette: The 4.0 has a slightly more athletic, technical look. The 5.0 leans more conventional thanks to the wool blend and detailing.
If you're someone who wants the suit to disappear into a traditional setting, the 5.0 plays that role better. If you like the modern, slightly sportier look, the 4.0 still holds up.
What's the Same Between the xSuit 4.0 and 5.0
It's worth being clear about what didn't change, because the core appeal of xSuit is consistent across both versions. Both the 4.0 and 5.0 are machine washable, wrinkle resistant, stain resistant, and built with the same proprietary nanotechnology that lets liquids bead off the fabric. Both come with the 45-day Perfect Fit Guarantee and the 1-year warranty. Both are designed for the same kind of customer: someone who wears a suit often, travels with it, and doesn't want to spend their life at the dry cleaner.
You can read more about the underlying nanotechnology and care guidance on the xSuit FAQ page, and the full lineup of colors and accessories is available across the xSuit collection.
Price Differences Between xSuit 4.0 and 5.0
Pricing is the other practical difference. The xSuit 4.0 has historically been the more affordable option in the lineup, while the xSuit 5.0 sits at a higher price point that reflects the wool blend and updated construction. Sale pricing fluctuates, so it's worth checking the current product pages directly, but the relationship is consistent: the 4.0 is the value pick, and the 5.0 is the premium pick.
For shoppers who care most about machine-washable convenience and an athletic feel at a lower entry point, the 4.0 makes sense. For shoppers who want a more traditional wool look and slightly more durable construction, the 5.0 is the upgrade.
Choosing the Right xSuit for the Way You Actually Wear It
The honest takeaway is that there isn't a wrong choice here, just a choice that fits your priorities. If you're buying a suit primarily for travel, daily commuting, or as a more flexible alternative to a traditional jacket, the xSuit 4.0 still delivers exactly what made the brand stand out in the first place. If you want something that reads as a more classic wool suit while keeping every performance feature, including washability and stretch, the xSuit 5.0 is the more polished version of the same idea.
Both are real suits built for real schedules. The difference is mostly about whether you lean modern or lean traditional, and how much you want to invest in the fabric and finish. Either way, the suit you buy is one you can throw in the wash on Friday night and wear again Monday morning, which is still the most useful thing about owning an xSuit in the first place.
