Honestly, if you've spent more than five minutes on TikTok lately, you’ve seen them. The silhouette is unmistakable—puddling over sneakers, sitting right on the hip bones, and looking like something straight out of a 2003 music video. I’m talking about the Casey Low Rise Baggy Jeans PacSun has been pumping out. They aren't just another pair of pants in the mall; they’ve become a literal phenomenon, moving over 60,000 units on TikTok Shop alone according to store data from 2025.
But here’s the thing. Most people are buying them thinking they’re just "another baggy jean," and then they get them home and realize the fit is... specific. It’s not your average 90s throwback. It’s a very deliberate construction that blends "I just rolled out of bed" with "I actually care about my silhouette."
The Architecture of the Casey Fit
So, what’s actually going on with these jeans? First off, they are rigid. That’s a dealbreaker for some, but a holy grail for others. Unlike those stretchy "jegging" hybrids that lose their shape by lunchtime, the Casey is 100% sustainably sourced cotton. No spandex. No give. This means they hold that structural, architectural bagginess that looks so good in photos.
The rise is the controversial part. At roughly 9.125 inches, it’s a true low rise. It’s meant to sit below the belly button, resting on the iliac crest (the top of your hip bones). If you try to pull these up to your natural waist, you're going to have a very uncomfortable day. They are designed to slouch.
Let's Talk Measurements
If you’re looking at the specs for a standard size 26, here is what you’re actually getting:
- Rise: 9.125" (Low-rise)
- Leg Opening: 22.25" (This is wide. Very wide.)
- Inseam Options: 31" (Short), 33" (Regular), 35" (Long)
The 22.25-inch leg opening is what gives that "puddle" effect. It’s wide enough to swallow a pair of Sambas or New Balance 550s entirely.
Why Everyone Is Obsessed (And Why Some People Hate Them)
Lisette Geller, a denim expert at Denimology, noted during a Soho store visit in 2025 that the Casey was the single most tried-on item in the fitting rooms. It didn’t matter if it was a 14-year-old or her 40-year-old mom; they were both walking out with the same light indigo wash.
The obsession comes from the "effortless cool" factor. Because the fabric is rigid, it doesn't cling to your thighs. It creates a straight, voluminous line from the hip down. This is incredibly flattering if you want to hide the shape of your legs while emphasizing a slim waistline (the classic "big pants, tiny shirt" combo).
The "Butt Smash" Problem
However, it’s not all sunshine and perfect OOTDs. Real talk: because the denim is 100% cotton and the rise is low, these jeans don't always play nice with curves. One verified buyer, Braelynne P., mentioned in early 2026 that while they fit everywhere else, they tended to "smash down" her backside. This is a common complaint with rigid, low-rise denim. If you have a more prominent seat, the lack of stretch means the fabric goes straight across rather than contouring.
Sizing: The Great Debate
One of the biggest misconceptions is that you should size up for a "baggier" look. Don't do it. Actually, the Casey already runs large. Multiple reviews from late 2025 and January 2026 suggest that these jeans have a bit of "vanity sizing" built in. A size 25 often feels like a 26 or 27 in other brands. If you size up, you’ll likely find the waist gaping so much that even a belt won't save the silhouette.
The Length Situation
PacSun offers "Short," "Regular," and "Long" lengths.
- Under 5'3": You absolutely need the Short (31" inseam). Even then, unless you're wearing platform UGGs or chunky sneakers, they might drag.
- 5'4" to 5'7": Regular (33" inseam) is usually the sweet spot for that slight stack at the ankle.
- 5'8" and up: Go for the Long (35" inseam).
I’ve seen girls who are 5'1" try to make the regular length work, and they end up stepping on the hems until the back of the jeans are shredded. It’s a look, sure, but maybe not the one you want for $65 jeans.
Style Variations: Not All Caseys are Created Equal
PacSun keeps iterating on this style because it’s a cash cow. You aren't just stuck with one wash.
- The Astrid: This is your classic medium indigo. Slouchy, simple, no bells and whistles.
- The Double Button: These have a slightly higher-feeling security because of the dual closure, and often feature button-flap back pockets which can help with that "butt flattening" issue by adding visual dimension.
- The Darted Knee: A newer 2025/2026 variant in light gray. It has seamed dart details at the knees which give it a more "workwear" or "utility" vibe. It keeps the leg from looking like a giant tube.
The Sustainability Angle
It’s worth noting that PacSun is using "medium-impact wash" processes for these. Basically, they use less water and fewer harsh chemicals than traditional denim manufacturing. Is it 100% carbon neutral? No. But for a mall brand targeting Gen Z, using 100% sustainably sourced cotton is a significant step up from the fast-fashion disposability of the past decade.
Actionable Tips for Buying and Wearing
If you’re ready to pull the trigger on a pair, here is the expert playbook for making them work:
- Check the Inseam twice. Measure from your crotch to the floor while wearing the shoes you plan to pair with these. If your measurement is 29", even the "Short" (31") will need a hem or a massive platform shoe.
- The "Sit Test" is mandatory. Because there is zero stretch, sit down in the fitting room. Low-rise rigid denim can dig into the hips when seated. If it hurts, go up one size and use a shoelace belt to cinch the waist.
- Break-in period. These will feel like cardboard for the first three wears. Don't wash them immediately. Wear them around the house, do some lunges, and let the cotton fibers soften and mold to your specific hip shape.
- Wash cold, hang dry. Never, ever put 100% cotton rigid denim in a hot dryer unless you want them to shrink an entire size and lose two inches of length.
The Casey Low Rise Baggy Jeans PacSun sells are a tribute to a specific era of fashion, but they’ve been modernized for a generation that values both comfort and sustainability. They aren't "easy" jeans—they require some thought on sizing and styling—but once you nail the fit, they're likely to become the most-worn item in your closet. Just be prepared to explain to your parents why your pants are "falling off" every time you go home for the weekend.
To get the most out of your Casey jeans, pair them with a fitted baby tee or a cropped hoodie to balance the extreme volume of the legs. This contrast is what makes the baggy look feel intentional rather than accidental. If you're between sizes, prioritize the fit at the hip bone rather than the waist, as that is where the garment is engineered to hang.