Arc'teryx SL vs. LT: Which one should you buy? [2026]

The Arc'teryx SL (Super Light) and LT (Lightweight) series represent two distinct approaches to high-performance outerwear from one of the most respected brands in the industry. The primary difference boils down to a trade-off between weight and durability: SL jackets use the thinnest, most packable fabrics for activities where every gram matters, while LT jackets use slightly more robust materials to offer a versatile balance of weather protection, features, and ruggedness suited for a wider range of conditions.

Here's everything you need to know to decide if the ultralight minimalism of the SL or the all-around performance of the LT is right for you.

Arc'teryx SL (Super Light) Series

The SL series is Arc'teryx's answer for the minimalist who needs reliable weather protection without the weight penalty. These jackets are engineered to be exceptionally lightweight and highly compressible, making them perfect as an emergency shell that lives in your pack until needed. The design philosophy is simple: include only the most essential features to save weight and space.

• What it is: A collection of Arc'teryx's lightest and most packable waterproof jackets, designed for fast-and-light mountain pursuits.
• Key features: Minimalist design with fewer pockets, simpler adjustments, and an athletic, trim fit to reduce bulk. Utilizes ultralight GORE-TEX or similar proprietary fabrics.
• Price: $350 - $500
• Materials/Construction: Often made with thinner, lighter GORE-TEX fabrics like Paclite Plus, which prioritize packability and breathability over long-term abrasion resistance.
• Sizing/Fit: A trim, close-to-body fit designed to be worn over minimal base layers. True to size, but provides less room for extensive layering than the LT series.
• Pros: Incredibly lightweight and packable, disappears in a backpack. Ideal for an emergency shell. Excellent breathability for high-output activities. More affordable price point.
• Cons: Reduced durability compared to LT models, not ideal for frequent use with heavy packs or in abrasive terrain. Fewer features, often lacking pit zips or multiple pockets.

This series excels for ultralight backpackers, climbers, and runners who prioritize weight savings above all else and need trustworthy protection from unexpected storms.

Shop this series: arcteryx.com/us/en/shop/superlight-jackets

Arc'teryx LT (Lightweight) Series

The LT series is the versatile workhorse of the Arc'teryx shell jacket lineup. It delivers a near-perfect balance of low weight, robust durability, and thoughtful features, making it the go-to choice for a massive range of outdoor activities. While still impressively light, LT jackets are built to withstand more sustained use and harsher conditions than their SL counterparts.

• What it is: A collection of all-around, durable, yet lightweight waterproof jackets suitable for varied mountain sports.
• Key features: Often includes practical features like pit zips for ventilation, helmet-compatible hoods with more adjustment points, and multiple pockets.
• Price: $400 - $600
• Materials/Construction: Utilizes more durable GORE-TEX constructions, such as 3-layer GORE-TEX with C-KNIT backer for comfort or GORE-TEX Pro for maximum ruggedness, offering superior abrasion and tear resistance.
• Sizing/Fit: Regular fit provides more room for layering underneath without being baggy, suiting a wider range of body types and activities.
• Pros: Excellent balance of durability, weight, and features. Highly versatile for activities from skiing to climbing and hiking. More resilient against wear from packs and scrapes. Feature-rich without being cumbersome.
• Cons: Heavier and less packable than the SL series. Higher price point than SL models. Might be overbuilt for those who only need an emergency shell.

Models in this series are ideal for backcountry skiers, alpinists, and dedicated hikers looking for one high-performance jacket to do it all.

Shop this series: arcteryx.com/us/en/shop/lightweight-jackets

Arc'teryx SL vs. LT Series Comparison

Durability & Materials

The most significant distinction lies here. The SL series uses thinner face fabrics and typically 2-layer or 2.5-layer laminates like GORE-TEX Paclite Plus to shed every possible gram. This construction is completely waterproof and windproof but is more susceptible to abrasion from pack straps, sharp rock, or tree branches over time.

Conversely, the LT series almost always uses a 3-layer GORE-TEX construction. This layered build places a durable face fabric on the outside and a protective inner fabric to shield the waterproof membrane. This makes LT jackets far more resilient to damage and better suited for harsh, regular use where your shell might come into frequent contact with equipment or rough surfaces.

Weight & Packability

This is where the SL series has a clear advantage. Designed to be minimalist, an SL jacket can often pack down to the size of a grapefruit and adds very little weight to your setup. It's the type of jacket you can carry on every adventure "just in case" without a second thought. While LT jackets are by no means heavy, they are noticeably bulkier and heavier due to their more robust fabrics and additional features. An LT shell takes up more space in your pack and is considered a core piece of equipment you expect to wear, not just carry.

Features & Design

The SL's "Super Light" designation comes partly from stripping away non-essential features. You will often find SL models with just one or two chest pockets, minimal hood adjustment points, and, most notably, no pit zips for ventilation. The goal is pure, stripped-down performance. The LT series adds back these "liveability" features. Pit zips are common on LT jackets, allowing you to dump heat without taking the jacket off. They also typically feature more pockets (including hand pockets), and a more sophisticated, helmet-compatible hood like the Arc'teryx StormHood™ with multiple cinch points for a perfect fit.

Price & Value

The SL series is generally more affordable, with prices starting around $350. For those who need a high-quality ultralight shell, it provides strong value. However, the LT series, starting around $400, can offer better long-term value for a user who needs one jacket to handle everything. Its superior durability means it will likely last longer under heavy use, making the higher initial investment worthwhile for a dedicated outdoor enthusiast.

Which One Should You Choose?

Ultimately, both are phenomenal product lines, but they serve different needs.

Choose the Arc'teryx SL Series if:

• Your primary concern is saving weight and space in your pack.
• You need an "emergency" shell for trail running, thru-hiking, or climbing in stable conditions.
• You are meticulous about caring for your gear and avoid abrasive environments.
• You mostly need protection from rain and wind, not prolonged abuse.

Choose the Arc'teryx LT Series if:

• You need one durable, versatile shell for a variety of activities like skiing, ice climbing, and mountaineering.
• You expect to wear your shell frequently in challenging conditions, including under a heavy pack.
• You value features like pit zips for ventilation and a highly adjustable, helmet-compatible hood.
• You are looking for the best balance of performance, weight, and long-term durability.

Frequently Asked Questions

What do SL and LT stand for?

SL stands for "Super Light," indicating the product is designed with the lowest possible weight and smallest packed size as the primary goal. LT stands for "Lightweight," denoting products that use durable, high-performance materials in a streamlined, minimalist design for all-around use.

What's the main difference between Arc'teryx SL and LT jackets?

The core difference is the trade-off between weight and durability. SL jackets are ultra-lightweight and packable but less durable, making them ideal emergency shells. LT jackets are more robust and feature-rich, designed as versatile workhorses for a wide range of rugged outdoor activities.

Is the LT series worth the extra money over SL?

If you're an all-around mountain user participating in activities like skiing or climbing where gear takes a beating, the added durability and features of the LT series are absolutely worth the price increase. For someone purely focused on ultralight backpacking, the SL is the better value.

Which series is more waterproof?

Both series use premium GORE-TEX membranes and offer exceptional waterproof protection out of the box. The difference comes down to long-term durability, the beefier face fabrics on LT jackets better protect the waterproof membrane from damage and maintain their water-beading DWR finish for longer under hard use.

How do Arc'teryx jackets fit?

Arc'teryx generally uses an athletic, trim fit. SL models are typically the most form-fitting to reduce weight and bulk. LT models offer a slightly more generous "Regular" fit to accommodate layers. Always check the specific product's fit guide, as it can vary, but most users find they are true to size.

Can I use an Arc'teryx SL jacket for skiing?

While an SL jacket will protect you from wind and snow, it’s not ideal for skiing. The thin material is susceptible to cuts from ski edges and abrasion from chairlifts or tree branches. An LT jacket is a far more appropriate choice due to its superior durability and features like a helmet-compatible hood.

Which is better for everyday casual wear?

For everyday use, an LT jacket is often a better choice. Its more robust construction will handle the daily grind better, and features like hand pockets are more practical for casual wear. Its silhouette often looks a bit more substantial as well.

Do Arc'teryx SL and LT jackets have pit zips?

This is a key differentiator. Most LT series jackets, like the popular Beta LT, include pit zips for ventilation. Most SL models do not include them as a weight-saving measure.