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Castelli Thermoflex Knee Warmers

£35.00 £28.00

The Castelli Thermoflex Kneewarmer features extra warm and stretchy fabric, that is also incredibly breathable and has excellent wicking properties... Read more

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SKU: CS170440102


The Castelli Thermoflex Kneewarmer features extra warm and stretchy fabric, that is also incredibly breathable and has excellent wicking properties.

Thermoflex is a brushed fleece fabric that feels lighter and more comfortable than Castelli Nanoflex treated fabrics making this warmer a great choice for hard efforts in dry conditions.

The double silicone gripper at the top - one inside one outside, grips both the thigh and inside of the short preventing the warmers from falling down, while the cross-wrap cuff at the calf seals out the drafts and resists riding up.

Key Features
  • Themoflex soft fleece fabric
  • Cross-wrap cuff at the calf
  • Double gripper elastic at top
  • Can be removed over cycling shoes
  • Sizes S-XL
  • Weight 94g (large)
  • Castelli comfort range 8˚-18˚C


    ABOUT Castelli

    Castelli Cycling is the most innovative, stylish and prestigious cycling clothier in the world. Decades of pro cycling development and a passion for perfection in materials, cut and performance has seen the brand reinvent cycle wear time after time. From the first Lycra shorts to sublimated printing, the game-changing Gabba and aerodynamic apparel, Castelli continues to set a path that others can only follow while maintaining generations of Italian heritage. Read more about Castelli.


    Founded by real cycling enthusiasts in 2004, our passion for elite performance runs through everything we do at Saddleback. Our team of dedicated roadies, mountain bikers and triathletes practice what we preach to bring you the finest cycling products and a superior service to match. We're the official UK home of 3T, Castelli, Chris King, ENVE, HJC, Intense, Moots Cycles, Peaty's, PUSH, Sidi, Silca, Stages, Troy Lee Designs and Wolf Tooth.


    Castelli Warmers Size Guide

    Jersey/Short Size Your Weight Suggested Warmer Size
    XS-S 45-60KG S (WOMAN)
    S-M 45-60KG S (MAN)
    S-M 60-70KG M
    L-XL 70-80KG L
    2XL-3XL >80KG XL

    Castelli warmer sizing relates to your jersey or short size and your body weight.

    Warmers have a lot of stretch and for designs incorporating Thermoflex fabric, you can size down.

    However, we would not recommend sizing down for Nano Flex and Nano Flex Plus products.


    Castelli Casualwear Size Guide

    CHEST - CM 88 92 96 100 105 110 115
    WAIST - CM 76 80 84 88 93 98 103
    HIPS - CM 90 94 98 102 107 112 117
    INSEAM - CM 81 82 83 84 85 86 87
    CHEST - CM 79 84 89 94 99
    WAIST - CM 63 68 73 78 83
    HIPS - CM 87 92 97 102 107
    INSEAM - CM 75 76 77 78 79

    Castelli casual clothing is designed to give a loose fit when correlated to your jersey size. So if you wear a Gabba in L, you will achieve a casual loose fit with a L-sized T-shirt. Bearing this in mind, if you prefer a closer fit you may wish to size down.

    For shorts and trousers, please select the same size as you would for bibshorts or tights. Women's T-shits and hoodies are designed for the female form. All other casual pieces are designed to be suitable for both men and women.


    Castelli Bras Size Guide

    G Under Bust Measurement in CM 68-72 73-77 78-82 83-87 88-89
    Light Bra A & B Cup Sizes XS S M L XL
    Support Bra C & D Cup Sizes XS S M L XL

    The Light Bra is designed for A and B cup sizes only. The Bellissimo bra is designed for B and C cup sizes only. The Support Bra is designed for C and D cup sizes only.

    Please note these are cycling bras and are designed to offer light support and maximum breathability on a bike. They should not replace a sports bra for high impact sports.

    To determine your frame size measure under the bust as indicated. To calculate your cup size measure around the fullest part of the bust. If the difference is less than 15cm, you will require the Light Bra. If the difference is greater than 15cm but less than 20cm, we recommend the support Bra. If the difference is greater than 20cm we would recommend you buy a commercially available sports bra.


    CHPT3 Size Guide

    CHPT3 – Tailored Sizing (pre-2020)

    Chest Inch CM Waist Inch CM
    A - 36 36 91.5 B - 29  29 73.5 
    A - 38 38 96.5 B - 30  30  76
    A - 39 39 99 B - 31  31  78.5
    A - 40 40 101.5 B - 32   32  81
    A - 41 41 104 B - 33  33  83.5
    A - 42 42 106.5 B - 34  34 86 
    A - 44 44 111.5 B - 36  36  91

    CHPT3 clothing uses a tailoring system for its sizes. The physical chest or waist size is used as the garment size. If you have a 40" chest, you will need a 40" jersey. Please note that while the CHPT3 range is not designed for racing, it is still a close fitting athletic design suitable for active cyclists.

    CHPT3 - 2020 range onwards

    A - Chest B - Waist C - Hips D - Inseam
    XS 88cm 76cm 90cm 81cm
    S 92cm 80cm 94cm 82cm
    M 96cm 84cm 98cm 83cm
    L 100cm 88cm 102cm 84cm
    XL 105cm 93cm 107cm 85cm
    2XL 110cm 98cm 112cm 86cm
    3XL 115cm 104cm 116cm 87cm

    Men's and unisex Castelli sizing is based on your physical measurements and the garment's intended use. Race items are designed to use fabric stretch to achieve a very snug fit; as such physical garment sizes vary within the range. Please don't compare sizing with other manufactures. The sizes shown above are for the maximum size, so someone with a 99cm chest would be a size L. If you have a 101cm chest then you're an XL.


    Sidi Cycling Shoes Size Guide

    Sidi EU Size UK Size US Size Length (cm)
    35 13 1 23
    35.5 13 1 23
    36 1 2 23.5
    36.5 1 2 23.5
    37 2 3 24
    37.5 2 3 24
    38 3 4 24.5
    38.5 3 4 24.5
    39 4 5 25
    39.5 4 5 25
    40 5 6 25.5
    40.5 5 6 25.5
    41 6 7 26
    41.5 6 7 26
    42 7 8 26.5
    42.5 7 8 26.5
    43 8 9 27
    43.5 8 9 27
    44 9 10 27.5
    44.5 9 10 27.5
    45 10 11 28
    45.5 10 11 28
    46 11 12 28.5
    46.5 11 12 28.5
    47 12 13 29
    47.5 12 13 29
    48 13 14 29.5

    Sidi fitting guide

    Like many handcrafted Italian shoes, Sidi cycling shoes feature a slim fit, the equivalent of a ‘D’ width. In our experience, if you’re usually a 45 in cycling shoes, you’ll be a 45 in Sidi shoes.

    However, you also have the option of Sidi’s half sizes. These use the same length soles as the main size (i.e. 45 and 45.5 are the same length) but use a larger volume upper. This is perfect if you need a touch more width, have slightly higher arches or use an insole that takes up some of the volume of your shoe.

    The volume and fit of the shoe is also affected by the closure system utilised. We’ve found that the combination of a central dial with the Soft Instep 4 strap means the Sidi Wire 2 has a slightly roomier toebox than the rest of the range, making it ideal for those seeking Italian styling with a little extra wiggle room.

    If you need more volume, Sidi’s range of Mega fit shoes feature soles that are 4mm wider and have larger uppers for those with higher volume feet or deep orthotics.

    Of course, everyone’s feet are different and slipping the shoes on will give you the best idea. We’d recommend trying them on towards the end of the day or even after a long ride to give your feet a chance to swell to their maximum size.

    If your toes are brushing the end of the shoe, they’re too small. If you stand on tiptoes and the heel of the shoe doesn’t lift with the heel of your foot, creating a gap, they’re too big.


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