SKU: 63711734554

Castelli BTW Speed Suit Men's

Sale price$92.32 Regular price$102.58
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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27

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Description

Castelli BTW Speed Suit Men'sCFD and significant testing create the fastest road racing suit, optimized for high speeds when the race splits apart. Product features Made to be the fastest option for high speed road racing Dimpled shoulder and sleeve fabric for boundary layer aerodynamics Smooth body for reduced skin friction and laminar flow Premio based short portion for aero comfort Progetto X2 Air seamless seat pad for all day comfort 2 way YKK zipper Lasered tone on tone

CFD and significant testing create the fastest road racing suit, optimized for high speeds when the race splits apart.

Product features

  • Made to be the fastest option for high-speed road racing
  • Dimpled shoulder and sleeve fabric for boundary-layer aerodynamics
  • Smooth body for reduced skin friction and laminar flow
  • Premio-based short portion for aero comfort
  • Progetto X2 Air seamless seat pad for all-day comfort
  • 2-way YKK® zipper
  • Lasered tone-on-tone logos at back of leg and stitched scorpion patch at top of back
  • Weight: 242gm
  • Temperature 14°C - 32°C / 57°F - 90°F
  • Fit: Aero

PUSHING THE LIMITS OF SPEED Military test pilots in the 1960s coined a phrase for pushing the aircraft to its limits, going all in, and risking their lives at the edge. The throttle levers with the knobs or balls at the top were pushed all the way forward against the cockpit wall: Balls to the Wall. BTW is for those days, those races where you never drop out of your 53x11 or 12, when you're sometimes in the gutter or cornering at the limit of adhesion. When you're all in, taking risks. Like the planes that inspired the phrase, the BTW Speed Suit uses cutting-edge research and construction in the pursuit of speed: CFD analysis, 3D test mannequins, fabric research and testing, numerous wind tunnel tests, and then testing in the WorldTour. At the beginning of the research project, we were set to sacrifice comfort in the name of speed, but in the end we kept fully breathable, fully stretchy fabrics. There’s a little more Lycra®, so you won’t stay quite as dry, and the shoulder fabric is slightly heavier. And it doesn’t have the Sanremo front opening, so your pee stops will be a bit more challenging. All that is a small price to pay for an incredible THREE PERCENT total aero drag savings compared to the fastest-in-class Sanremo Speed Suit. That 3 percent is at higher speeds, especially in the 45-65 kph range, when it really counts. You can get the BTW suit in your team graphics through Castelli's custom program, or this stealthy ninja black version to tear up your local Strava segments or group rides.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 63711734554

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4.8 ★★★★★
Based on 17 reviews
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Alta -W
Massapequa, US
★★★★★ 5
Excellent Quality
Color: Mixed Ocean Woven Leather
I'm so glad I ordered this bag! It is super cute and very well made. Just the right size and looks classy!
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Reviewed in the United States on March 27, 2026
D
Verified Purchase
Drew
Omaha, US
★★★★★ 4
Trendy, cute bag at great price if you’re looking for designer inspired look at deep discount
Color: Wine Woven Leather, Color: Wine Woven Leather
I think if you are looking for a woven bag with a designer look (like the Bottega Veneta clutch this is modeled after) for a very deep discount then this bag is for you. I don’t think I will keep this bag because personally I don’t love the overly fake looking gold hardware that I think would scratch and tarnish very easily and the stitching is not great (you can see on video.) However, if you are looking for more of “the look” and less concerned about long term quality this would be a great bag! The color of this bag is very nice. I added pictures of it in direct sunlight and also indoors. I think it is very versatile and will match with many outfits because of the color. It is also a great large size clutch that could definitely fit more than your standard clutch and it comes with a crossbody strap to make it more functional. Overall for the price I think this is a great little bag that is very on trend right now!
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Reviewed in the United States on April 21, 2026
D
Verified Purchase
Dana Berstein
Battle Creek, US
★★★★★ 5
Very pretty bag
Color: Champagne Gold Woven Leather
Very pretty bag it’s a great knock off to the bottega bag. The size is great and I get a lot of compliments.
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Reviewed in the United States on April 12, 2026
M
Verified Purchase
Michelle
Natrona Heights, US
★★★★★ 5
Very good size to carry a phone
Color: Silver Woven Leather
I ended up wearing a different outfit on NYE and returned, but I really wanted to keep it. The item was delivered flawless, and good quality of the pu - silver color was intact and not peeling. Why I wanted to keep it & will purchase other colors is the size. This is the first evening dress clutch that I could fit iPhone 14 Pro Max, along with a compact, keys, lipstick and liner, and card wallet. Would have been so easy for me to carry, and sit on a table or on the car dash. Cost is reasonable considering I’m getting the burgundy and will use it more often than silver
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Reviewed in the United States on January 13, 2026
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Verified Purchase
Janis Manhattan
Chelsea, US
★★★★★ 5
Why spend $3400, when this is so similar?
Color: Cream Beige Woven Leather
A great little bag. Perfect for an evening out and very much has the look of the $3400 original. If you've seen the more expensive one, you can see that the closure of this one is extremely similar. As for durability, at this price if it lasts one or two seasons, that's fine with me. It also comes with a dust bag, which makes it easy to keep clean and dust free while it sits on my shelf waiting for me to use it. I love that I can use it with the crossbody strap, the top handle or carry it as a clutch.
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Reviewed in the United States on April 11, 2026

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