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350GSM Thermal Fleece
High-density insulation for extreme cold.
360° Storage
Waistband secures phone and fuel—bounce-free.
Wind-Resistant Knit
Dense construction reduces airflow and heat loss.
High-Rebound Waistband
Elastic system locks in fit with lasting recovery.
Product Details
Technical Features
350GSM Thermal Insulation: 20% thicker and 10% warmer than our Alpine Compression Tight, delivering advanced cold-weather protection while maintaining stretch and support.
Wind-Resistant Fleece Construction: Dense-knit fabric structure minimizes fiber separation under stretch, reducing airflow penetration and maintaining thermal efficiency.
High-Rebound Waistband: Multi-layer elastic design stretches to fit and instantly recovers its shape, maintaining a secure, locked-in feel mile after mile.
Ergonomic Modesty Panel: Built-in liner is contoured for a natural fit, minimizing friction while providing secure coverage and stability on the move.
Quick-Adjust Drawstring System: Built-in internal drawcord cinches securely and stays flat against the body, allowing fast, on-the-move adjustments without knots or slip.
Reflective Safety: Durable reflective logos remain highly visible in low light—even after repeated washes.
Storage
360º Waistband Storage: Full-circle design fits a phone, 11oz FlipBelt Arc Water Bottle, keys, headphones and up to 8 energy gels without bounce.
Dual Thigh Pockets: Discreet, quick-access compartments for fueling or gear—reachable mid-stride without breaking pace.
Ergonomic Zipper Pocket: Quick-grab design holds AirPods or other small essentials separately and securely for on-the-move efficiency.
Partitioned Pockets: Multiple compartments keep items organized and secure, whether you’re carrying gels, a phone, or a water bottle.
Durability Built In: TPU pull reinforcements ensure shape retention and stress resistance over thousands of uses.
Fabric Features
Bionic Thermal Fleece: Brushed interior with upright fleece fibers traps heat while channeling moisture outward, keeping warmth in and skin dry.
Moisture-Wicking Performance: Advanced knit structure pulls sweat away quickly to prevent chill during cold-weather runs.
Durability Under Stress: Engineered to retain compression and structure through repeated stretching and miles of wear.
Supportive Stretch Fabric: High-spandex blend delivers firm muscle support without restricting movement.
UPF 50+ Protection: Blocks 99% of UV rays for added coverage on exposed winter runs.
Love the flipbelt integrated pocket system and side pockets and was happy when they released these ultra thermal tights - my go-to for cold weather runs in the 0 - 20 degree F range - I put them on and don't have to worry about my legs being comfortable. Fit is a little different than their compression shorts but stay in place and cozy warm
M
Michael
Its looser than i wanted. Probably should have gotten extra small albeit these are pretty comfy on my morning runs.
A
Anonymous
Product fit:
Runs small
Runs large
Usual Size:S
Size Purchased:M
I would say the material is super nice and they
I would say the material is super nice and they are definitely warm, but I do have a second that the crotch is way too low and needs to be higher but the pockets and stuff are great. Or possibly an internal liner that would give support because I’ve had issues with chasing, but I’ve never had in any of my years of running due to the low crotch.
C
COrunner
Product fit:
Runs small
Runs large
Usual Size:S
Size Purchased:S
The fit is way off. I returned these
I have the Ouray and regular compression shorts for running in size Small and they were excellent. I therefore bought these ultimate and Alpine thermal tights expecting the same fit and performance. I was wrong. While the material quality is good, the fit is very off. The seat is a lot higher than the shorts, so the waistline sits at my belly button and that's not comfortable. Additionally, they made these at crop tight length so they come up well short of the ankles. That's unacceptable when you're buying something for coverage in cold weather. I tried a size bigger with Medium but the extra material bunches at the crotch due to the inflexibility in movement with the seamless crotch. I returned all pairs. My recommendation: shorter seat, better fit for men's anatomy, and maybe offer 2 lengths. Keep the colors, I like the creativity and I prefer brighter colors contrasting against the snow. For now I'll stick to my 2XU and Lululemon thermal tights but would gladly try the next iteration of these tights as I think the flipbelt pocket setup is better
L
Leo
Product fit:
Runs small
Runs large
Usual Size:M
Size Purchased:M
Some things are good, while others are not.
I have purchased several products from Flitbelt, including a belt, shorts, water bottles, and most recently, the Men's Alpine Ultra Thermal Compression Tights. I have three observations to share about these tights: first, the material is excellent; second, the pockets are very practical; however, the fit in the crotch area is too low. I've had to pull them up above my lower belly to achieve a proper fit, and even then, they still tend to slip down.
