If you're like most outdoor lovers, you've got a stack of old denim jeans sitting in the back of your closet right now: the 2012 pair you ripped hiking the Appalachian Trail, the 90s Levi's you found at a thrift store that fit perfectly but have a hole in the knee, the work jeans your grandpa left you that are too stiff to wear but the fabric is still tough as nails. I've got three pairs of beat-up heavyweight denim in my own "upcycling pile" right now, and I've turned them into everything from a day hiking backpack (made from a pair of 1990s Carhartt jeans that's now covered in 12 years of trail coffee stains and still going strong) to a bouldering crash pad cover over the last two years---no fancy sewing skills required, just a little patience and the right strategies. The best part? Vintage denim is actually better for a lot of outdoor gear than cheap new synthetic fabrics: its tight, rugged twill weave resists abrasion from rock, brush, and heavy loads, it breaks in to fit your body perfectly over time, and it's way more sustainable than buying brand new performance gear made from virgin plastic and shipped across the world.
The trick to making denim outdoor gear that actually holds up to rain, mud, heavy packs, and cliff falls isn't just cutting up old jeans and sewing them together willy-nilly. It's knowing how to prep your fabric, pick the right projects for denim's unique strengths, and add small performance upgrades that make the gear as functional as anything you'd buy at a specialty outdoor store.
First: Prep Your Vintage Denim for Outdoor Use
Not all old denim is created equal, and the last thing you want is to spend 3 hours sewing a backpack only to have the seams pop on your first hike. Start by sorting through your denim pile first:
- Skip thin, stretched-out fast fashion denim (most 2010s "jeggings" style denim, or jeans that are so worn the fabric is see-through) and opt for heavyweight 12oz or higher twill denim. Work jeans, vintage Levi's 501s, 1970s-90s carpenter jeans, and military denim are all perfect, as they're woven tightly enough to resist tears and abrasion.
- Reinforce any weak spots before you start cutting: patch small holes or worn areas at the knees, seat, or cuffs with matching denim, or even waxed canvas for extra reinforcement on high-wear spots. If you're using jeans with metal rivets, save them! They're perfect for reinforcing stress points on bags and gear, and they add a cool vintage touch.
- Wash the denim to remove any dirt, old stains, or leftover detergent, then treat it with a wash-in DWR (durable water repellent) spray. This makes the denim water-resistant without changing its soft, broken-in texture, so it won't soak up water and get heavy in the rain. Skip this step if you're making gear for hot, dry climates, but it's non-negotiable for anything you'll use in wet or snowy conditions.
Best Project Strategies for High-Performance Denim Gear
Denim shines for gear that needs abrasion resistance, structure, and a little give, but it's not ideal for load-bearing parts that need extreme stretch or water tightness. Stick to these project types for the best results:
1. Daypacks, Gear Haulers, and Travel Bags
Denim's rigid, sturdy weave is perfect for bags that carry heavy loads, and it breaks in beautifully over time to fit your back and shoulders. For the most durable build:
- Use the waistband and pocket panels of old jeans as the base of the bag---these are the thickest, most reinforced parts of the denim, so they'll hold up to the weight of a full pack without stretching out.
- Add a waxed canvas or recycled nylon ripstop bottom panel to the bag, so you can set it down on rough rock, mud, or campground gravel without wearing through the base.
- Salvage old denim pockets from jeans to add as exterior stash pockets for water bottles, snacks, your phone, or a map. You can even use old belt loops as attachment points for carabiners or gear straps.
- If you want extra water resistance, add a removable waterproof liner made from an old plastic shower curtain or recycled dry bag material, so you can keep your electronics and extra layers dry even if the denim gets wet.
2. Climbing and Bouldering Accessories
Vintage denim's abrasion resistance makes it perfect for climbing gear that takes a beating against rock, and it's way more stylish than the generic nylon gear most climbers use.
- For chalk bags: Cut panels from the thickest part of old work denim, line the inside with a water-resistant recycled nylon scrap to keep chalk from seeping through, and use an old paracord or repurposed jeans drawstring for the closure. Add a small denim pocket on the front for your brush or tape.
- For bouldering crash pad covers: Quilt 2-3 layers of heavyweight denim together with thin batting for extra padding, then treat the exterior with DWR to keep mud and dew from seeping through. Add handles made from old climbing rope or denim straps reinforced with rivets for easy carrying.
- For knee and elbow pads for bouldering or trail work: Cut panels from the seat and knee sections of old work jeans (the thickest, most durable parts of the fabric), add a layer of closed-cell foam inside for cushioning, and attach with adjustable elastic straps made from old clothing or climbing webbing. Reinforce the attachment points with rivets from old jeans so they won't pop off mid-climb.
3. Camping and Hiking Apparel Modifications
You don't have to sew a full garment from scratch to make high-performance denim outdoor wear---small modifications to existing vintage denim pieces go a long way:
- Turn old denim jeans into hiking pants by adding reinforced knee patches cut from the seat of another pair of jeans, and waxed canvas patches on the inner calves to resist abrasion from brush and rocks. Add a few extra pockets on the thighs for trail snacks, a multi-tool, or a first-aid kit.
- Make lightweight gaiters from the lower leg panels of old jeans: add a hook-and-loop closure salvaged from an old pair of worn-out boots, line the inside with a scrap of recycled fleece for warmth, and treat the exterior with DWR to keep mud, snow, and debris out of your boots.
- Modify an old denim jacket for hiking by adding extra interior pockets for maps and a headlamp, reinforcing the elbows with waxed canvas patches, and adding a loop on the chest for clipping on a carabiner with your keys or water filter.
Pro Tips to Make Your Denim Gear Last for Years
Even the sturdiest vintage denim will fall apart fast if you cut corners on construction. Keep these tips in mind to make gear that lasts as long as the original jeans:
- Use heavy-duty nylon or polyester thread for all structural seams, not standard cotton thread. Cotton thread will rot over time when exposed to rain and sweat, while nylon thread holds up to UV exposure, moisture, and heavy loads.
- Don't use denim for load-bearing parts: while denim is great for abrasion resistance, it's not as strong as specialized climbing nylon or Dyneema, so don't use it for the main shoulder straps of a backpack, climbing harnesses, or rope anchors. Stick to using it for outer shells, pockets, and non-structural panels.
- Test all gear on short trips first before taking it on multi-day backpacking or climbing trips. Take your new denim daypack on a local day hike to test the strap comfort, pocket placement, and water resistance, and fix any loose seams or weak spots before you rely on it for longer adventures.
- Embrace the patina: unlike shiny new synthetic gear, vintage denim gear gets better with age. It softens in the spots you use it most, develops small scratches and stains that tell the story of your adventures, and only gets more comfortable the more you use it.
Final Thought
Upcycling vintage denim into outdoor gear isn't just a way to save money on expensive new gear---it's a way to keep textiles out of landfills, reduce your outdoor gear footprint, and carry a piece of history with you on every adventure. That denim backpack you make from your grandpa's old work jeans will have way more character than anything you can buy off the shelf, and it'll hold up to just as much abuse on the trail. Next time you're about to throw away a pair of beat-up jeans, don't toss them---grab a needle, some heavy-duty thread, and turn them into gear that'll take you on your next big adventure.