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Alpine Thermal RT Bibs Men's

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OVERVIEW: Reflective Cycling ClothingThe Alpine Thermal Bib Shorts, with Reflective Technology (RT) on the left thigh and leg grippers, is an excellent choice for low-light, fall and winter rides, early morning training or cold-weather commuting. Thermal bib shorts are perfect for riders who want thermal coverage in the torso and upper thighs but prefer optional use of knee or leg warmers.

FABRICS & CONSTRUCTION: Italian MITI® Lombardia stretch fabric, featured throughout the body and straps of the bib 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 cold-weather miles. Built with Pactimo’s signature Silhouette™ Engineering, these bibs use innovative articulation and a unique strap and front panel design to allow you to enjoy longer rides with less material bunching, chaffing and discomfort. The Alpine Thermal bibs feature Elastic Interface™ Liege Carbonium chamois for exceptional freedom of movement and comfort.

The left-side thigh strip and leg grippers 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 »


  • 4.5cm reflective leg band grippers for maximum visibility
  • Designed with Silhouette™ Engineering
  • Elastic Interface™ Liege Carbonium chamois
  • Italian MITI® Lombardia Thermal stretch fabric 
  • Plastotex Pixel® Reflective fabric 
  • Breathable mesh uppers
  • 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 = 22.5 cm
M = 23 cm
L = 23.5 cm
XL = 24 cm
2XL = 24.5 cm

Pair with Knee Warmers and the Alpine Thermal RT Jersey for and you'll ride comfortably in temperatures in the 50's, plus you'll have 360° safety with the jersey's reflective forearm and shoulder swatches. Use Leg Warmers, Neck Gaiter, Thermal Cap and the Cascade RT Jacket and you'll be warm and reflective on winter rides down into the 30'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

See more Fit Comparison videos for Women »

See more Fit Comparison videos for Men »


Size Charts

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

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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