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Castelli Tutto Nano W Bibtight - Black
(Product No.: CG-4519542.010.B)
IT JUST HAPPENS TO BE GOOD IN THE RAIN TOO
Our Nano Flex 3G fabric is the result of a decade of development. It's our best all-around fabric for winter tights: warm, stretchy, luxuriously soft, highly breathable and on top of that it features our proprietary third generation of nanotechnology water-repellent finish. While other companies are using simple chemical water-repellent finishes, we create a nanotechnology mechanical repellency to enhance a chemical DWR finish. You stay drier and more comfortable.
Even though this tight features our latest water-repellency technology, don't think of it as just a niche rain tight. The fabric makes for a great dry-weather tight, and the reduced-seam anatomical cut makes it extremely comfortable. We use the pro-level KISS Air2 Donna seat pad along with a mesh bib and zippered ankles.
This is the tight that's good at everything.
PRODUCT FEATURES
- The bibtight that's great in every possible condition
- New Nano Flex 3G fabric is exceptionally warm and soft yet with even better rain protection
- Reduced seaming for improved comfort and fit
- Mesh bib straps don't hold moisture
- KISS Air2 Donna seat pad for long-distance comfort
- Zippers at ankle for easier on/off
- Embossed logos for durability
Find more products here
Our Nano Flex 3G fabric is the result of a decade of development. It's our best all-around fabric for winter tights: warm, stretchy, luxuriously soft, highly breathable and on top of that it features our proprietary third generation of nanotechnology water-repellent finish. While other companies are using simple chemical water-repellent finishes, we create a nanotechnology mechanical repellency to enhance a chemical DWR finish. You stay drier and more comfortable.
Even though this tight features our latest water-repellency technology, don't think of it as just a niche rain tight. The fabric makes for a great dry-weather tight, and the reduced-seam anatomical cut makes it extremely comfortable. We use the pro-level KISS Air2 Donna seat pad along with a mesh bib and zippered ankles.
This is the tight that's good at everything.
PRODUCT FEATURES
- The bibtight that's great in every possible condition
- New Nano Flex 3G fabric is exceptionally warm and soft yet with even better rain protection
- Reduced seaming for improved comfort and fit
- Mesh bib straps don't hold moisture
- KISS Air2 Donna seat pad for long-distance comfort
- Zippers at ankle for easier on/off
- Embossed logos for durability
Find more products here
Castelli Size Chart
The following sizing information is taken from the current official Castelli size chart. For the best fit, Castelli recommends measuring directly on the body or over underwear. If your measurements fall between two sizes, Castelli recommends choosing the larger size.
Men – Tops
| Size | Chest | Waist |
|---|---|---|
| XS | 88 cm | 76 cm |
| S | 92 cm | 80 cm |
| M | 96 cm | 84 cm |
| L | 100 cm | 88 cm |
| XL | 105 cm | 93 cm |
| 2XL | 110 cm | 98 cm |
| 3XL | 115 cm | 103 cm |
Men – Bottoms and Bib Shorts
| Size | Hips | Inside leg |
|---|---|---|
| XS | 90 cm | 81 cm |
| S | 94 cm | 82 cm |
| M | 98 cm | 83 cm |
| L | 102 cm | 84 cm |
| XL | 107 cm | 85 cm |
| 2XL | 112 cm | 86 cm |
| 3XL | 117 cm | 87 cm |
Men – Gloves
| Size | Hand circumference |
|---|---|
| XS | < 18.4 cm |
| S | 18.4–20.3 cm |
| M | 20.3–22.2 cm |
| L | 22.2–24.1 cm |
| XL | 24.1–26 cm |
| 2XL | > 26 cm |
Men – Socks
| Size | EU shoe size | US shoe size |
|---|---|---|
| S/M | 35–39 | 4–7 |
| L/XL | 40–43 | 8–10 |
| 2XL | 44–47 | 11–14 |
Men – Shoe Covers
| Size | EU shoe size | US shoe size |
|---|---|---|
| S | 36–39 | 4–7 |
| M | 40–42 | 8–9 |
| L | 43–44 | 10–11 |
| XL | 45–46 | 12–13 |
| 2XL | 46–48 | 13–14 |
Women – Tops
| Size | Chest | Waist |
|---|---|---|
| XS | 79 cm | 63 cm |
| S | 84 cm | 68 cm |
| M | 89 cm | 73 cm |
| L | 94 cm | 78 cm |
| XL | 99 cm | 83 cm |
Women – Bottoms and Bib Shorts
| Size | Hips | Inside leg |
|---|---|---|
| XS | 87 cm | 75 cm |
| S | 92 cm | 76 cm |
| M | 97 cm | 77 cm |
| L | 102 cm | 78 cm |
| XL | 107 cm | 79 cm |
Women – Sports Bras
| Size | Bust | Underbust |
|---|---|---|
| XS | 81–85 cm | 65–69 cm |
| S | 86–90 cm | 70–74 cm |
| M | 91–95 cm | 75–79 cm |
| L | 96–100 cm | 80–84 cm |
| XL | 101–105 cm | 85–89 cm |
Women – Gloves
| Size | Hand circumference |
|---|---|
| XS | < 16.6 cm |
| S | 16.6–18.4 cm |
| M | 18.4–20.2 cm |
| L | 20.2–22 cm |
| XL | > 22 cm |
Women – Socks
| Size | EU shoe size | US shoe size |
|---|---|---|
| S/M | 35–38 | 5–7 |
| L/XL | 39–41 | 8–11 |
Women – Shoe Covers
| Size | EU shoe size | US shoe size |
|---|---|---|
| S | 35–37 | 3–5 |
| M | 37–39 | 5–7 |
| L | 39–42 | 7–9 |
Kids
| Size | Body height | Hand circumference shown in Castelli kids chart |
|---|---|---|
| 6Y | 116 cm | – |
| 8Y | 128 cm | 14.2–16 cm |
| 10Y | 140 cm | 16–17.8 cm |
| 12Y | 152 cm | 17.8–19.6 cm |
| 14Y | 164 cm | – |
Kids note: The official Castelli kids chart does not show a hand-circumference value for 6Y or 14Y. These fields have therefore deliberately been left blank.
How to Measure
- Chest: measure horizontally under the arms around the fullest part of the chest.
- Waist: measure horizontally around the natural waistline, keeping the tape slightly loose.
- Hips: measure horizontally around the fullest part of the hips with feet together.
- Inside leg: measure a well-fitting pair of trousers from the crotch seam to the ankle.
- Hand circumference: measure around the hand using a tape measure or a piece of string and a ruler.
- Bra: measure bust at the fullest point and underbust directly below the bust.
Fit: Castelli specialises in performance cycling apparel and many garments have a close-to-body fit. The manufacturer's general rule is to choose the larger size when your measurements fall between two sizes. Product-specific fit guidance always takes priority.
Source: official Castelli Cycling Size Chart, current manufacturer website. Status 08/2026.