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Mac In A Sac Ultralite Womens Waterproof Jacket

SKU: 67448 - S
£74.99
No Reviews
Mac In A Sac Ultralite Womens Waterproof Jacket
Mac In A Sac Ultralite Womens Waterproof Jacket
Mac In A Sac Ultralite Womens Waterproof Jacket
Mac In A Sac Ultralite Womens Waterproof Jacket
Mac In A Sac Ultralite Womens Waterproof Jacket
The Mac in a Sac Women’s Ultralite Waterproof Jacket in Navy is a lightweight stretch running shell designed for wet-weather training, commuting, and fast-paced outdoor sessions. With a streamlined cut for comfortable movement, it provides reliable protection without feeling bulky, making it ideal for road runs, hill workouts, and everyday active use. The jacket is highly packable and stores into its own pocket, so it’s easy to carry when conditions change.
Engineered with a 2.5-layer construction and fully taped seams, the Ultralite combines waterproof performance with breathability to help manage moisture during higher-effort runs. The stretch fabric supports freedom of movement, while the windproof build helps cut chill on exposed routes. An adjustable hood with a wire peak offers stable coverage in rain, and two front zipped pockets secure essentials. Reflective detailing adds visibility in low-light conditions.
  • Highly waterproof rated fabric (10,000mm) with fully taped seams for dependable rain protection
  • Highly breathable performance (16,000mm) with 2.5-layer construction for moisture management
  • Outer fabric: 96% polyester / 4% spandex stretch material for flexible, comfortable movement
  • Windproof shell with adjustable hood and wire peak for stable weather coverage
  • Packable design with two front zipped pockets and reflective detailing for practicality and visibility

Mac In A Sac Ultralite Womens Waterproof Jacket

SKU: 67448 - S
£74.99
No Reviews
Size guide

Size Guides

This is a generic size guide based on the average sizes, this is not representative of any branded item you are buying and should be use cautiously.

Tops

Attention: This guide provides general sizing information only, and fit can vary depending on style and brand. For more specific sizing information on the product, please refer to product description.

Mens

Size Chest Waist Hip Chest Waist Hip
CM INCH
2XS
XS 83-86 71-74 82-85 32.5-34 27.5-29 32-33
S 87-92 75 -80 76 -91 34.5-36 29.5-31.5 34-36
M 93-100 81-88 92-99 36.5-39 32-34.5 36.5-39
L 101-108 89-96 100-107 39.5-42.5 35-38 39.5-42
XL 109-118 97-106 108-116 43-46.5 39.5-42 42.5-45.5
2XL 119-130 107-119 117-125 47-51 42.5-47 46-49
3XL 131-142 120-132 126-135 51.5-56 47.5-52 49.5-53
4XL
5XL

Womens

Womens Size Size(s) Bust Waist Hip Bust Waist Hip
CM INCH
0-2 2XS 73-76 57-60 82-85 28.5-29.5 22-23.5 31.5-33
4-6 XS 77-82 61-66 86-91 30-32 24-26 33.5-35.5
8-10 S 83-88 67-72 92-97 32.5-34.5 26.5-28.5 36-38
12-14 M 89-94 73-78 98-103 35-37 29-31 38.5-40.5
16-18 L 95-101 79-85 104-110 37.5-40 31.5-33.5 41-43
20-22 XL 102-109 86-94 111-117 40.5-43 34-37 43.5-46
24-26 2XL 110-118 95-104 118-125 43.5-46.5 37.5-41 46.5-49

Kids

Age Size(s) Height Chest Waist Hip Height Chest Waist Hip
CM INCH
0M - 51 - 56 38.5 38.5 37
0-3M - 57 - 62 43 43 42
3-6M - 63 - 68 45.5 45 45
9M - 69 - 74 47 46.5 47.5
Age 1 - 75 - 80 49.5 49 50
Age 2 - 81 - 92 52 50.5 53
Age 3 - 93 - 98 54.5 52.5 56
Age 4 - 99 - 104 56 54.5 60
Age 5 - 105 - 110 58 55 62
Age 6 YXS 111 - 116 60.5 56 64
Age 7 YXS/YS 117 - 122 63 57 66
Age 8 YS 123 - 128 64 59 68
Age 9 YS/YM 129 - 134 67.5 61.5 71
Age 10 YM 135 - 140 71 63.5 74.5
Age 11 YM/YL 141 - 146 74.5 66 77.5
Age 12 YL 147 - 152 78 68 81
Age 13 YXL/2XS 153 - 158 82 70.5 85
Age 14 YXL/XS 159 - 164 86 73 89
Age 15 XS 165 - 170 89 74.5 91.5
Age 16 XS/S 171 - 176 91.5 76.5 94

Bottoms

Attention: This guide provides general sizing information only, and fit can vary depending on style and brand. For more specific sizing information on the product, please refer to product description.

Mens

Size Inseam Waist Hip
CM
2XS
XS 81 71 - 74 82 - 85
S 81.5 75 - 80 76 - 91
M 82 81 - 88 92 - 99
L 82.5 89 - 96 100 - 107
XL 83 97 - 106 108 - 116
2XL 82.5 107 - 119 117 - 125
3XL 82 120 - 132 126 - 135
4XL
5XL

Womens

Womens Size Size(s) Waist Hip
CM INCH CM INCH
0-2 2XS 73-76 22 85 33
8 XS 62 24 90 35
10 S 67 26 95 37
12 M 72 28 100 39
14 L 77 30 105 41
16 XL 82 32 110 43
18 2XL 87 34 115 45

Kids

Age Size(s) Height Inseam Waist Hip
CM
0M - 51 - 56 19.1 38.5 37
3M - 57 - 62 21.75 43 42
6M - 63 - 68 24.25 45 45
9M - 69 - 74 27 46.5 47.5
Age 1 - 75 - 80 31.12 49 50
Age 2 - 81 - 92 38 50.5 53
Age 3 - 93 - 98 41 52.5 56
Age 4 - 99 - 104 45.5 54.5 60
Age 5 - 105 - 110 49.5 55 62
Age 6 YXS 111 - 116 52 56 64
Age 7 YXS/YS 117 - 122 56 57 66
Age 8 YS 123 - 128 59.5 59 68
Age 9 YS/YM 129 - 134 62 61.5 71
Age 10 YM 135 - 140 65 63.5 74.5
Age 11 YM/YL 141 - 146 68 66 77.5
Age 12 YL 147 - 152 70.5 68 81
Age 13 YXL/2XS 153 - 158 73.5 70.5 85
Age 14 YXL/XS 159 - 164 76.5 73 89
Age 15 XS 165 - 170 79 74.5 91.5
Age 16 XS/S 171 - 176 82 76.5 94

Footwear

Attention: This guide provides general sizing information only, and fit can vary depending on style and brand. For more specific sizing information on the product, please refer to product description.

Mens

UK EUR USA CM MM
7 41 8 26 260
7.5 42 8.5 26.5 265
8 42.5 9 27 270
8.5 43 9.5 27.5 275
9 44 10 28 280
9.5 44.5 10.5 28.5 285
10 45 11 29 290
10.5 46 11.5 29.5 295
11 46.5 12 30 300
11.5 47 12.5 30.5 305
12 48 13 31 310
12.5 48.5 13.5
13 49 14
13.5 49.5 14.5
14 50 15
15 51.5 16

Womens

UK EUR USA CM MM
2 34.5 4
2.5 35 4.5
3 35.5 5 21.5 215
3.5 36 5.5 22 220
4 37 6 22.5 225
4.5 37.5 6.5 23 230
5 38 7 23.5 235
5.5 38.5 7.5 24 240
6 39 8 24.5 245
6.5 40 8.5 25 250
7 40.5 9 25.5 255
7.5 41 9.5 26 260
8 42 10 26.5 265
8.5 42.5 10.5 27 270
9 43 11 27.5 275
9.5 44 11.5
10 44.5 12

Kids

UK EUR USA CM
K10 28 K10.5 16.6
K10.5 28.5 K11 17
K11 29 K11.5 17.4
K11.5 30 K12 17.8
K12 30.5 K12.5 18.3
K12.5 31 K13 18.7
K13 31.5 K13.5 19.1
K13.5 32 1 19.5
1 33 1.5 20
1.5 33.5 2 20.4
2 34 2.5 20.8
2.5 35 3 21.2
3 35.5 3.5 21.6
3.5 36 4 22.1
4 36 ⅔ 4.5 22.5
4.5 37 ⅓ 5 22.9
5 38 5.5 23.3
5.5 38 ⅔ 6 23.8
6 39 ⅓ 6.5 24.2

Headguards

Attention: This guide provides general sizing information only, and fit can vary depending on style and brand. For more specific sizing information on the product, please refer to product description.

Adults

Size Circumference
CM INCH
S 55 21.5
M 57 22.5
L 58.5 23
XL 60 23.5

Kids

Size Circumference
CM INCH
YS 51 20
YM 52.5 20.5
YL 54 21
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The Mac in a Sac Women’s Ultralite Waterproof Jacket in Navy is a lightweight stretch running shell designed for wet-weather training, commuting, and fast-paced outdoor sessions. With a streamlined cut for comfortable movement, it provides reliable protection without feeling bulky, making it ideal for road runs, hill workouts, and everyday active use. The jacket is highly packable and stores into its own pocket, so it’s easy to carry when conditions change.
Engineered with a 2.5-layer construction and fully taped seams, the Ultralite combines waterproof performance with breathability to help manage moisture during higher-effort runs. The stretch fabric supports freedom of movement, while the windproof build helps cut chill on exposed routes. An adjustable hood with a wire peak offers stable coverage in rain, and two front zipped pockets secure essentials. Reflective detailing adds visibility in low-light conditions.
  • Highly waterproof rated fabric (10,000mm) with fully taped seams for dependable rain protection
  • Highly breathable performance (16,000mm) with 2.5-layer construction for moisture management
  • Outer fabric: 96% polyester / 4% spandex stretch material for flexible, comfortable movement
  • Windproof shell with adjustable hood and wire peak for stable weather coverage
  • Packable design with two front zipped pockets and reflective detailing for practicality and visibility