The $24 Costco Men’s Pant That Lululemon Is Suing Over: A Full 2025 Dupe Comparison

The search for high-performance, stylish men’s pants that can transition seamlessly from the office to the golf course or a weekend trip often leads to one place: Lululemon’s legendary ABC™ (Anti-Ball Crushing) Pant. However, for the savvy shopper, the journey has long included a detour to a membership warehouse, where the Kirkland Signature Men's Performance Pant has earned a reputation as the ultimate, budget-friendly "dupe." As of late 2024 and heading into 2025, the value proposition is stark: pay $128 for the original or grab the Kirkland version for a fraction of the cost, a comparison that has become so famous it’s sparked a major corporate lawsuit.

The Kirkland Signature Commuter Pant (also frequently referred to as the 5-Pocket or Performance Pant) is not just a cheap knock-off; it is a meticulously designed alternative that mimics the key features of its premium counterpart—namely, four-way stretch, wrinkle resistance, and a modern, versatile fit. This article provides a deep dive into the current details, comparing the fabrics, features, and fit of both the Costco favorite and the Lululemon original, and gives a crucial update on the legal battle that has put the spotlight firmly on this incredible performance wear bargain.

The Ultimate Side-by-Side: Kirkland Signature vs. Lululemon ABC Pant

The central question for any consumer is whether the significant price difference—often a savings of over $100—justifies a slight compromise in quality or fit. The short answer is: for most people, the Kirkland Signature Men's Performance Pant is an unbeatable value. Here is a detailed breakdown of how the two popular performance pants compare, focusing on the latest available models.

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Price and Availability (2025 Update)

• Lululemon ABC™ Pant: The standard price for the ABC Pant is typically around $128 USD. They are consistently available in a wide range of sizes, fits (Classic, Slim, Skinny), and inseams, both online and in-store.
• Kirkland Signature Performance Pant: The current, commonly reported price for the Kirkland version (often called the Commuter Pant) is approximately $23.99 USD. Availability is the biggest variable; they are seasonal, often appearing in-store and online at Costco in late fall and early spring. They are considered a "treasure hunt" item, and clearance prices can drop as low as $5.

Fabric Technology and Performance

The secret to the Lululemon ABC Pant's success is its proprietary Warpstreme™ fabric. This material is engineered for both comfort and a polished, work-appropriate look. The Kirkland pant aims to replicate this feel with its own technical blend.

Lululemon ABC Pant (Warpstreme™)

• Composition: Typically 100% Polyester.
• Key Features: Four-way stretch, quick-drying, sweat-wicking, and excellent shape retention. It is famously wrinkle-resistant, making it a staple for travelers and commuters.
• Signature Technology: The ABC (Anti-Ball Crushing) Gusset is a unique feature that provides extra room and mobility in the crotch area, preventing restriction and enhancing comfort.

Kirkland Signature Performance/Commuter Pant

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• Composition: Varies slightly by model, but often a blend of 74% Polyester and 26% Elastomultiester (for 2-way stretch) or a Recycled Polyester blend (for 4-way stretch).
• Key Features: Offers both 4-way stretch and moisture-wicking properties. A significant addition is the UPF 50+ sun protection, which is a great feature for outdoor activities like golf or hiking.
• Comfort Details: Includes a comfortable, stretchy waistband and a smooth, lightweight feel.

Fit, Finish, and Hidden Features

While the fabrics are functionally similar, the fit and finishing details are where the two pants diverge, and these differences are often the deciding factor for consumers.

The Fit Factor: Slim vs. Standard

Lululemon offers a variety of fits, but the ABC Pant is known for its tailored, modern, and often slightly slimmer silhouette, especially in the "Slim" and "Skinny" cuts. The fit is a major part of its appeal, allowing it to look like a dress pant while feeling like an athletic jogger.

The Kirkland Signature Performance Pant generally features a more relaxed, standard straight-leg fit. While still modern and not baggy, it lacks the specific tailoring and tapered look that many Lululemon fans seek. Reviewers often note that the Kirkland pant is slightly looser through the leg, which can be a pro for those who prefer more room or a con for those wanting a sharper, more contemporary look.

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Pocket Design and Functionality

Both pants are designed for utility, but the execution is different:

• Lululemon: Features include a hidden media pocket inside the front pocket, a zippered back pocket, and a sleek, minimalist aesthetic.
• Kirkland Signature: The Costco dupe includes a similar array of functional pockets, most notably a hidden zipper secured pocket on the left front and a back pocket with a snap closure. However, some users note the Kirkland version lacks the specific internal mesh cell phone sleeve found in the Lululemon counterpart.

The Legal Battle: Lululemon vs. Costco Lawsuit Update

Perhaps the most compelling and current entity surrounding the Kirkland pants is the ongoing legal dispute. In a major move to protect its intellectual property, Lululemon filed a lawsuit against Costco, alleging that the warehouse giant was selling "dupes" that infringed on its patents and trade dress.

Key Details of the Infringement Claim

The lawsuit, which was filed in a California court, specifically targets several Costco products, including the Kirkland Signature men's pants, claiming they are a copy of the design of the ABC Pant. Lululemon argues that the close resemblance of the products—including the overall look, feel, and technical features—constitutes patent and trade dress infringement, potentially confusing consumers and causing Lululemon lost sales.

As of the latest updates, the legal dispute is ongoing, with Lululemon requesting a jury trial and seeking damages. This high-profile legal action underscores just how similar and successful the Kirkland dupe has been in the market. While the legal merits are debated—with some experts suggesting Lululemon faces a high hurdle in proving infringement on basic garment designs—the mere existence of the lawsuit highlights the incredible value and quality Costco achieved at a fraction of the price. For the consumer, the lawsuit is a clear signal: the Kirkland pant is functionally close enough to the ABC pant to be considered a serious competitor by the brand itself.

Beyond the Dupe: Other High-Value Costco Performance Pants

While the Kirkland Signature Performance Pant is the undisputed Lululemon ABC dupe, Costco frequently rotates other high-quality, high-value performance wear brands that offer excellent alternatives for men seeking versatile, comfortable pants.

32 Degrees Performance Pants

The 32 Degrees brand is a consistent favorite at Costco, known for its thermal and performance wear. Their offerings often include joggers and textured pants that provide excellent warmth and flexibility.

• Features: 32 Degrees pants are often praised for their incredible comfort, soft texture, and excellent value, with joggers frequently priced around $15. They are a perfect alternative for a more casual, athletic-leisure fit compared to the chino-style of the Kirkland Commuter Pant.

Gerry and Haggar Performance Lines

Costco also stocks performance and travel pants from brands like Gerry and Haggar. These pants typically focus on a blend of durability, water resistance, and comfort, often featuring technical fabrics and travel-friendly features. While not direct ABC Pant dupes, they offer similar quick-dry, stretch, and wrinkle-resistant properties, providing excellent options for specific needs like hiking or business travel on a budget.

Final Verdict: Is the Kirkland Pant Worth the Hype?

The Kirkland Signature Men's Performance Pant absolutely lives up to its reputation as the best Lululemon ABC Pant dupe. For a current price of around $24, you get a pant with four-way stretch, UPF 50+ protection, moisture-wicking technology, and functional zippered pockets. The only trade-off is a slightly more relaxed, straight-leg fit compared to Lululemon's tailored look, and the absence of the proprietary ABC gusset.

Given the massive price difference—a full $104 saved—the Kirkland pant offers 90% of the functionality and style for less than 20% of the cost. The fact that Lululemon has taken legal action against Costco over this product is perhaps the highest praise the dupe could receive. For the budget-conscious consumer seeking a versatile, high-performance pant, the Kirkland Signature version remains the undisputed champion of value in the performance wear category.