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Men's Alpine Thermal RT Tights (with chamois)

Size & Fit Chart

OVERVIEW: Reflective Cycling ClothingThe Alpine Thermal Tights, with Reflective Technology (RT) on the left thigh and calves, are an excellent choice for low-light, fall and winter rides, early morning training or cold-weather commuting. Built with our Ascent-Level, Elastic Interface® Liege Carbonium chamois, they are ideal for long winter adventures.

FABRICS & CONSTRUCTION:When winter arrives and the days get shorter and darker, you can stay warm and visible in Pactimo’s Alpine Thermal Tights, featuring Reflective Technology (RT). The left-side thigh strip and large, rear calf panels are designed with reflective fabric from Plastotex, an innovative Italian manufacturer. This revolutionary fabric has refractive elements impregnated directly into the cloth that “explode” with brightness when illuminated by exposure from direct light, such as a car’s headlights.

Learn more and see photos of Reflective Technology in action »

Italian MITI® Lombardia stretch fabric, featured throughout the rest of the tight, will be soft and cozy against your skin. Due to its high-performing breathability, it not only keeps you warm and dry, but prevents you from over-heating as you put in those winter miles.


  • Italian MITI® Lombardia Thermal stretch fabric
  • Elastic Interface® Liege Carbonium chamois
  • Plastotex Pixel® Reflective fabric 
  • Waist band drawstring for comfort closure
  • YKK Zippered ankle opening for easy entry/exit
  • 100% flatlock stitching

The following OFF BODY inseam lengths were measured on a garment at rest. They may not exactly reflect the ACTIVE inseam length when the garment is being worn due to the combined effects of the 1) the riders's torso and femur length, 2) stretchiness of the material, and 3) the rider's leg musculature.

S = 67 cm
M = 68 cm
L = 69 cm
XL = 70 cm
2XL = 71 cm

Pair with the Cascade RT Jacket for top-to-bottom cold-weather defense and 360° reflectivity. Add a Neck Gaiter and Thermal Cap and you'll be warm in temperatures down into the 30's. Or, pair with the Alpine Thermal RT Jersey and you also have top and bottom reflectivity while being perfectly outfitted for temperatures in the 50's.

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Size & Fit Chart

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Fit Guide


Items designed to provide a traditional performance fit.


Items in this category have been designed to provide an aerodynamic form fit.

Second Skin Fit


Items in this category have been designed to provide an ultra form fit.

Fit Videos

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Size Charts

Custom cycling clothing size chart example - man
Pactimo Cycling Clothing Size Chart
Custom cycling clothing size chart example - woman

Kid's Cycling Clothing Size Chart

PLEASE NOTE: Not all garments are available in every size listed on size charts.

Arm, Knee and Leg Warmer Sizes

Shoe Cover Size Chart

Custom cycling sock size chart

Cycling Glove Size Chart

Measuring Tips 


Using a soft measuring tape, bring the tape across your back under each arm, around the front. For women, measure the widest point of the bust. For men, measure around the largest part of your chest.


Bend to one side to find natural indentation in torso. This is your natural waist. Run tape around waistline, keeping tape parallel with floor. 


Stand on a level surface with feet together. Measure around fullest part of hips and bottom (approximately 7" - 9" below waistline), keeping tape parallel with floor.

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