🛍️ Shop SALE and Save ££'s 🛍️

Size Guide

Jump to Womens Size Guides

Mens Size Guides

Top Tips For Getting The Right Size

  1. Get measured before you order 
  2. Measure your chest and belly at its largest point 
  3. For road tops, if your belly is larger than your chest, use that measurement unless you don't mind a stretched fit across your belly
  4. Our outdoor T shirts and MTB jerseys are a loose fit so check the half chest measurements in the product information and compare to your existing gear. Please note 2024 sizing may differ from previous fit  
  5. For road bottoms, if you are under 5'10" a smaller size will probably fit better. If you are over 6'4" a larger size may fit better.
  6. See product pages for specific advice and sizing
  7. Drop our sizing guru's an email with your measurements if you need help
  8. Long sleeve underarm length *approx 61cm
  9. Jersey *approx length centre under collar to hem
  10. Sizes are approximate tolerance +/- 2cm
  11. When trying on adopt cycling position to see how the garment will feel when you are riding your bike
  12. As a rule, if between sizes it's usually better to go down a size for bottoms and for tops it depends whether you prefer a snugger or looser fit

Mens Road Tops, Jerseys and Jackets (excl. Waterproof)

See product specific info on the product pages under 'Product Details' and 'Fitting & Sizing'

FLAB SIZE
CHEST

*JERSEY LENGTH

(Front  :  Back)

36 36" (92cm)
59cm  :  70cm
38 38" (97cm)
59cm  :  70cm
40 40" (102cm)
59cm  :  70cm
42 42" (107cm)
59cm  :  70cm
44 44" (112cm)
59cm  :  70cm
46 46" (117cm)
60cm  :  71cm
48 48" (122cm)
61cm  :  72cm
50 50" (127cm)
62cm  :  72cm
52 52" (132cm)
64cm  :  73cm
Big and Tall/Spare Tyre 54/58" (137-147cm)
68cm  :  77cm

Mens Waterproof Rain Jacket

FLAB SIZE
CHEST (cm)

LENGTH

(Front  :  Back)

44 44" (112cm)
60cm  :  77cm
46 46" (117cm)
60cm  :  77cm
48 48" (122cm)
62cm  :  78cm
50 50" (127cm)
62cm  :  78cm
52 52" (132cm)
64cm  :  78cm
Big and Tall/Spare Tyre 54/58" (137-147cm)
68cm  :  80cm

Mens Road Bottoms, Shorts and Tights

If you are unsure of your size, particularly if you are an international customer, please drop our sizing guru's an email with your measurements and height before ordering, so we can double check. 

So much can affect the fit of bib shorts - height, build, thigh, bottom and chest size. 

If you are between sizes it's usually best to go DOWN a size.

FLAB SIZE
WAIST
1 28-30" (71-76cm)
2 30-32" (76-81cm)
3 32-34" (81-86cm)
4 34-36" (86-92cm)
5 38-40" (97-102cm)
6 40-42" (102-107cm)
7 42-44" (107-112cm)
8 44-46" (112-117cm)
9 46-48" (117-122cm)
10 50-54" (127-138cm)
Spare Tyre 56"+ (142-162cm)

 Mens Tech T, Outdoor and MTB Tops

FLAB SIZE
CHEST

 *Laid Flat Garment Measures (cm)

Chest : Front Length : Back Length

40/42 40/42" (102/107cm) 59  :  59  :  79
44/46
44/46" (112-117cm)
64  :  61  :  83
48/50
48/50" (122-127cm)
70  :  63  :  83
52/54
52/54" (132-137cm)
76  :  63  :  83
54/58
54/58" (137-147cm)
82  :  68  :  88

Mens Cracking Bottoms

As people carry their fat and muscle in different places the stretchy fabrics we use, combined with the design means that each short size can accommodate a variety of different body shapes and sizes.

We have used our FLAB sizing for road cycling gear to give existing customers an idea of how the shorts fit as well as a size chart.

For best results pick a size which best corresponds to your waist at its largest point (belly) and hip measurement. If you have chunky thighs and legs we suggest the larger of the sizes, if you have slim legs, you're probably better with the smaller size.

Available in 2 leg lengths = Short (32cm)* and Long (37cm)* leg length - *approx inseam from centre crotch seam and may vary upto +/-2cm

If you need help with a sizing suggestion drop our guru's an email

FLAB SIZE
WAIST    HIPS
L (4-5) 35-40" (88-101cm) 43-47" (109-119cm)
XL (6-7) 39-44" (99-112cm) 46-50" (117-127cm)
2XL (8-9) 44-48" (112-122cm) 49-53" (124-135cm)
3XL (10+) 48-56" (122-142cm) 52-56" (132-142cm)

Mens Undershorts

FLAB SIZE
WAIST 
4 34/36" (86-92cm)
5 38/40" (97-102cm)
6 40/42" (102-107cm)
7 42/44" (107-112cm)
8 44-46" (112-117cm)
9 46-48" (117-122cm)
10 50"+ (127cm+)

Mens Triathlon

FLAB SIZE
CHEST WAIST
44 44" (112cm)
38-44" (97-112cm)
46 46" (117cm)
40-46" (102-117cm)
48 48" (122cm)
42-48" (107-122cm)
50 50" (127cm)
46-50" (117-127cm)
52 52" (132cm)
50-54" (127-138cm)
Big and Tall/Spare Tyre  54"+ (137cm)
56"+  (142cm)

Mens T-Shirts

FLAB SIZE
CHEST 
S 36/38" (91-97cm)
M 38/40" (97-102cm)
L 42/44" (107-112cm)
XL 44/46" (112-117cm)
2XL 46/48" (117-122cm)
3XL 48/50" (122-127cm)
4XL 52/54"(132-137cm)
5XL 54/56" (137-142cm)

Arm Warmers

FLAB SIZE
APPROX BICEP APPROX JERSEY SIZE
1 27-30cm 34"
2 28-31cm 36"
3 29-32cm
38"
4 30-33cm 40"
5 31-34cm
42"
6 32-36cm 44"
7 34-38cm
46"
8 36-40cm
48"
9 38-42cm
50"
10 40-44cm
52"
11 42cm+ 54-58"/Spare Tyre

Women's Size Guides

Top Tips For Getting The Right Size

  1. Get measured before you order 
  2. Measure your bust, waist and hips at their largest part
  3. For bottoms, if you are under 5'6" a smaller size may fit better. If you are over 6' a larger size may fit better
  4. See product pages for specific advice and sizing
  5. Drop our sizing  guru's an email with your measurements if you need help
  6. Long sleeve underarm length *approx 57cm
  7. Jersey *approx length centre under collar to hem
  8. Sizes are approximate tolerance +/- 2cm
  9. When trying on adopt cycling position to see how the garment will feel when you are riding your bike
  10. As a rule, if between sizes it's usually better to go down a size for bottoms and for tops it depends whether you prefer a snugger or looser fit 

Women's Road Tops, Jerseys and Jackets (excl. Waterproof)

See product specific info on the product pages under 'Product Details' and 'Fitting & Sizing'

FLAB (UK) SIZE

BUST

WAIST

HIPS

34 (8/10)

34" (87cm)

27" (69cm)

37" (94cm)

36 (10/12)

36" (92cm)

30" (76cm)

39" (99cm)

38 (12/14)

38" (97cm)

32" (82cm)

41" (104cm)

40 (14/16)

40" (102cm)

35" (89cm)

43" (109cm)

42 (16/18)

42" (107cm)

37" (94cm)

46" (117cm)

44 (18/20)

44" (112cm)

39" (99cm)

49" (125cm)

47 (20/22)

47" (119cm)

42" (107cm)

51" (130cm)

50 (22/24)

50" (127cm)

46" (117cm)

55" (140cm)

53 (24/26)

53" (135cm)

48" (122cm)

59" (150cm)

Approx Jersey Length

FLAB (UK) SIZE
FRONT  BACK 
34 (8/10) 60cm
66cm
36 (10/12)
60cm
66cm
38 (12/14)
60cm
66cm
40 (14/16) 62cm
68cm
42 (16/18)
62cm
68cm
44 (18/20) 64cm
70cm
47 (20/22)
64cm
70cm
50 (22/24)
64cm
70cm
53 (24/26)
64cm
70cm

Women's Waterproof Jacket

FLAB (UK) SIZE
BUST (cm)

LENGTH

(Front  :  Back)

42 (16/18) 42" (107cm)
64cm  :  77cm
44 (18/20) 44" (112cm)
64cm  :  77cm
47 (20/22) 47" (119cm)
64cm  :  77cm
50 (22/24) 50" (127cm)
65cm  :  77cm
53 (24/26) 52" (133cm)
65cm  :  77cm

Women's Road Bottoms, Shorts and Tights

FLAB (UK) SIZE
WAIST  HIPS
1 (8/10) 27" (69cm) 37" (94cm)
2 (10/12) 30" (76cm) 39" (99cm)
3 (12/14) 32" (82cm) 41" (104cm)
4  (14/16) 35" (89cm) 43" (109cm)
5  (16/18) 37" (94cm) 46" (117cm)
6  (18/20) 39" (99cm) 49" (125cm)
7  (20/22) 42" (107cm) 51" (130cm)
8  (24/26) 46" (117cm) 55" (140cm)

Women's Tech T, Outdoor and MTB Tops

FLAB SIZE
BUST

 *Laid Flat Garment Measures (cm)

Bust : Front Length : Back Length

40/42 40/42" (102/107cm) 59  :  61  :  76
44/46
44/46" (112-117cm)
64  :  63  :  78
48/50
48/50" (122-127cm)
64  :  63  :  78

Women's Cracking Shorts

As people carry their fat and muscle in different places the stretchy fabrics we use, combined with the design means that each short size can accommodate a variety of different body shapes and sizes.

We have used our FLAB sizing for road cycling gear to give existing customers an idea of how the shorts fit as well as a size chart.

For best results pick a size which best corresponds to your waist at its largest point (belly) and hip measurement. If you have chunky thighs and legs we suggest the larger of the sizes, if you have slim legs, you're probably better with the smaller size.

Available in 2 leg lengths = Short (32cm)* and Long (37cm)* leg length - *approx inseam from centre crotch seam and may vary upto +/-2cm

If you need help with a sizing suggestion drop our sizing guru's an email

FLAB SIZE
WAIST    HIPS
L (4-5) 35-40" (88-101cm) 43-47" (109-119cm)
XL (6-7) 39-44" (99-112cm) 46-50" (117-127cm)
2XL (8-9) 44-48" (112-122cm) 49-53" (124-135cm)
3XL (10+) 48-56" (122-142cm) 52-56" (132-142cm)

Women's Undershorts

FLAB (UK) SIZE
WAIST  HIPS
4  (14/16) 35" (89cm) 43" (109cm)
5  (16/18) 37" (94cm) 46" (117cm)
6  (18/20) 39" (99cm) 49" (125cm)
7  (20/22) 42" (107cm) 51" (130cm)
8  (24/26) 46" (117cm) 55" (140cm)

Women's Tech T-Shirts

FLAB SIZE
OVER BUST

LENGTH

(Front  :  Back)

S 36-38" (92-96cm)
70cm  :  71cm
M 38-40" (97-101cm)
72cm  :  73cm
L 42-44" (106-111cm)
74cm  :  75cm
XL 44-46" (111-116cm)
75cm  :  76cm
2XL 46-48" (116-122cm)
76cm  :  77cm
3XL 48-50" (122-127cm)
78cm  :  79cm
4XL 52-54" (132-137cm)
80cm  :  81cm
5XL 54-56" (137-142cm)
82cm  :  83cm

Women's Triathlon

FLAB SIZE
BUST WAIST HIPS
40 40" (102cm) 35" (89cm) 43" (109cm)
42 42" (107cm)
37" (89cm)
46" (117cm)
44 44" (112cm)
39" (99cm)
49" (125cm)
47 47" (119cm)
42" (107cm)
51" (130cm)
50 50" (127cm)
46" (117cm)
55" (140cm)

Arm Warmers

FLAB SIZE
APPROX BICEP APPROX JERSEY SIZE
1 27-30cm 34"
2 28-31cm 36"
3 29-32cm
38"
4 30-33cm 40"
5 31-34cm
42"
6 32-36cm 44"
7 34-38cm
46"
8 36-40cm
48"
9 38-42cm
50"
10 40-44cm
52"
11 42cm+ 54-58"/Spare Tyre