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  • Santini Nat Racer Bib Short - Men's
  • Santini Nat Racer Bib Short - Men's Chamois
  • Santini Nat Racer Bib Short - Men's Back
  • OptionsSantini -
  • Detail Images - Chamois
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SantiniNat Racer Bib Short - Men's
Sale 40% Off$134.95 $224.95

Item # SAN000R

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  • Black, M ($134.95)
  • Black, L ($134.95)
  • Black, XL ($134.95)
  • Black, 3XL ($134.95)
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Item # SAN000R

Fewer is better.

Everyone knows that the more panels that your cycling shorts are made of, the better they fit. Right? Santini revisited this popular claim and realized that conversely, fewer panels means fewer seams, and fewer seams means less chafing. The Santini Nat Racer Bib Short is designed using this premise.

The shorts were knit from Santini's exclusive Onda fabric. This knit supports and fits the thighs to provide light compression. Following a series of "waves" (Onda means 'wave' in Italian), the knit alternates between single and multiple Lycra threads. This helps the shorts to grip securely while still maintaining breathability so that you remain cool and comfortable. Additionally, the leg grippers are incorporated directly into the knit so that there is no binding or pinching. The bibs are held in place with T-shaped elastic mesh straps.

Santini built the Nat Racer bibs around its best-selling NAT chamois. This chamois is a multi-density insert that features a NEXT gel core. Designed for the hottest days, the gel is sandwiched between two foam layers ranging from 2mm to 4mm thick. The top layer is anti-bacterial microfiber which moves moisture away from the skin to keep you chafe-free. The bottom layer extends into wings to protect sensitive areas from friction and irritation. The depressions in the insert are stitched from the inside-out so that there are no stitches or seams in contact with the skin.

  • Bib shorts for road cycling and racing
  • Onda panels conform to your unique shape
  • Minimal seams reduce chaffing for comfort
  • NAT chamois provides breathable cushioning
  • NEXT gel core and foam layers absorb impact
  • Microfiber is treated to resist bacterial buildup
  • Mesh straps secure the fit without cutting off airflow
Tech SpecsSize
Tech Specs
[main panels] Onda, [straps] elastic mesh
spring, summer, fall
form fit
NAT Chamois
Chamois Thickness
2 x 4 mm
Leg Gripper
Recommended Use
road cycling
Manufacturer Warranty


Men's Cycling Apparel

67.7 - 69.3in

(172 - 176cm)

68.9 - 70.5in

(175 - 179cm)

70.1 - 71.7in

(178 - 182cm)

71.3 - 72.8in

(181 - 185cm)

72.4 - 74in

(184 - 188cm)

73.6 - 75.2in

(187 - 191cm)

74.8 - 76in

(190 - 193cm)


36.2 - 37.8in

(92 - 96cm)

37.8 - 39.4in

(96 - 100cm)

39.4 - 40.9in

(100 - 104cm)

40.9 - 42.5in

(104 - 108cm)

42.5 - 44.1in

(108 - 112cm)

44.1 - 45.7in

(112 - 116cm)

45.7 - 47.2in

(116 - 120cm)


30.7 - 32.3in

(78 - 82cm)

32.3 - 33.9in

(82 - 86cm)

33.9 - 35.4in

(86 - 90cm)

35.4 - 37in

(90 - 94cm)

37 - 38.6in

(94 - 98cm)

38.6 - 40.2in

(98 - 102cm)

40.2 - 41.7in

(102 - 106cm)


35.4 - 37in

(90 - 94cm)

37 - 38.6in

(94 - 98cm)

38.6 - 40.2in

(98 - 102cm)

40.2 - 41.7in

(102 - 106cm)

41.7 - 43.3in

(106 - 110cm)

43.3 - 44.9in

(110 - 114cm)

44.9 - 46.5in

(114 - 118cm)

How to Measure:
For best results, take measurements over your underwear.
Measure under your arms, around the fullest part of your chest.
Measure around your natural waistline, keeping the tape a bit loose.
Measure around the fullest part of your body at the top of your legs.

Reviews & Community


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Avg. ride time: 12h 27m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Decent bib but a little odd

  • Familiarity: I've used it several times
  • Fit: Runs small
  • Size Bought: Large

As noted these bibs run super small. Even with a large they're hard to get on. The design is attempting at not moving or rubbing which works well but the lower back section has a different, traditional fabric and is completely stretchy & lose. It creates an odd feel & dynamic. Anyways, big fan of Santini but these are only so-so

Unanswered Question

These reviews have me quite confused as to what size to order. I'm 6'3" 175lb average build and all. 39" hips. I measured my thigh and it was 22". I own a pair of Santini CX bibs from the early 2000's in Large. They are quite snug, a little too snug too short in the torso. I could have bought an XL but I was afraid the legs would be too small at the knee. I went to a Euro website that has an interactive fit suggestion "based on thousands of like measurements", so it sez, and it suggests XL. I have a feeling the compression in the legs is what throws people for a loop. I wear a Patagonia R0 form fitting rashguard as a top, and I yes it's very tight in my normal large, and it's supposed to be that way ! So I know how to get compression clothing on and off. As long as it's not tight around the privates, I'd be good ! I want to avoid a return so any size help would be appreciated !


  • Fit: Runs small
  • Size Bought: XXXL

compression fabric makes a XXXL fit like a Large. Sprinter with 24" thighs and They were downright laughable. Looked great. Size and Fabric stretch were WAY OFF.

Fits small

  • Fit: Runs small

I'm 5'9.5" and 158 lbs and could not "fit" into the medium. These shorts fit small.

Avg. ride time: 10m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Santini Scores

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: Runs small
  • Size Bought: XXXLARGE

Great fit with comprehension throughout legs and grippers that keep shorts from moving up. The chamois is simple, supportive, and disappears during a ride—in that you forget about it and just ride.

Avg. ride time: 4h 3m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.


    Nice item!

    Size is an issue...

    • Familiarity: I returned this product before using it

    For reference...I'm 6'3"...chest 45"...waist 37"...thigh 24". Ordered 2XL...couldn't get them on my legs...returned. Ordered 3XL...couldn't get them on my legs. I wouldn't order 4XL, if it was available, because the waist would be far too large. Too bad...CC loses twice on shipping to me and I lose twice on return shipping. Can't comment on anything else about these since I can't get them on. 3 stars because they're Santini but sizing is a problem.

    I started cycling at 6' 240lbs, went through a bunch of brands but Hincapie (bottoms and SOME tops) always fit amazingly well. Makes sense, as it's an American brand (NC) and probably cut appropriately in all models but the team kits. I wore an XL from 235 to 215bs and am now at 212 and they are definitely loose (the straps were always loose as they were for slightly taller people). I am considering purchasing size L Hincapie bibs for 19 season, which is the same size as my everyday clothes which I recently purchased. This comment is for any larger guy not fitting into 3XL bibs and thinking "is it me?". No it's the sizing conventions. Hincapie, go browse.