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Ultimate Direction Blazek 18 Backpack Onyx
Ultimate Direction Blazek 18 Backpack Onyx
Ultimate Direction Blazek 18 Backpack
Ultimate Direction Blazek 18 Backpack UD Blue
Ultimate Direction Blazek 18 Backpack
Ultimate Direction Blazek 18 Backpack
Ultimate Direction Blazek 18 Backpack
Ultimate Direction Blazek 18 Backpack
Ultimate Direction Blazek 18 Backpack
Ultimate Direction Blazek 18 Backpack
Ultimate Direction Blazek 18 Backpack
Ultimate Direction Blazek 18 Backpack
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Ultimate Direction

80479323ONX

Ultimate Direction Blazek 18 Backpack

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Collections: Backpacks Featured Brands Free Returning Shipping Gear Men Men's and Unisex Backpacks Ultimate Direction Ultimate Direction Backpacks Women Women's and Unisex Backpacks

Size Guide
Size Guide - Ultimate Direction

MEN'S OUTERWEAR & TOP SIZING

Size Chest (in)/ Chest (cm) Waist (in)/ Waist (cm) Hip (in)/ Hip (cm) Arm Length (in)/ Arm Length (cm)
SM 36 - 38 / 91.44 - 96.52 30 - 33/ 76.20 - 83.82 35 - 38/ 88.90 - 96.52 32/ 81.28
MD 38 - 41/ 96.52 - 104.14 33 - 35/ 83.82 - 88.90 38 - 40/ 96.52 - 101.60 33/ 83.82
LG 41 - 43/ 104.14 - 109.22 35 - 37/ 88.90 - 93.98 40 - 43/ 101.60 - 109.22 34/ 86.36
XL 43 - 46/ 109.22 - 116.84 38 - 41/ 96.52 - 104.14 43 - 46/ 109.22 - 116.84 35/ 88.90

How to Measure: 

CHEST: Measure around the widest part of your chest, keeping the measuring tape horizontal.

WAIST: Measure around the narrowest part of your waist.

HIPS: Measure around the widest part of your hips.

SLEEVE LENGTH: Measure from the middle of the base of your neck, down your arm and to the wrist.

 

WOMEN'S OUTERWEAR & TOP SIZING

Size Chest (in)/ Chest (cm) Waist (in)/ Waist (cm) Hip (in)/ Hip (cm) Arm Length (in)/ Arm Length (cm)
XS 32 - 34/ 81.28 - 86.36 25 - 28/ 63.50 - 71.12 34 - 37/ 86.36 - 93.98 30/ 76.20
SM 34 - 36/ 86.36 - 91.44 28 - 30/ 71.12 - 76.20 37 - 39/ 93.98 - 99.06 31/ 78.74
MD 36 - 38/ 91.44 - 96.52 30 - 31/ 76.20 - 78.74 39 - 41/ 99.06 - 104.14 31/ 78.74
LG 38 - 40/ 96.52 - 101.60 31 - 34/ 78.74 - 86.36 41 - 43/ 104.14 - 109.22 32/ 81.28
XL 40 - 43/ 101.60 - 109.22 34 - 37/ 86.36 - 93.98 43-46/ 109.22-116.84 33/ 83.82

How to Measure: 

CHEST: Measure around the widest part of your chest, keeping the measuring tape horizontal.

WAIST: Measure around the narrowest part of your waist.

HIPS: Measure around the widest part of your hips.

SLEEVE LENGTH: Measure from the middle of the base of your neck, down your arm and to the wrist.

 

Ultimate Direction Men's/Unisex Running Vests

SIZE VEST SIZING (UNISEX)
SM 23 - 32 inch / 58 - 81 cm
MD 30 - 39 inch / 76 - 99 cm
LG 37 - 46 inch / 94 - 117 cm
XL 44 - 52 inch / 112 -132 cm



How to Meaure:

RIBS: Measure around the bottom of your ribs.

Ultimate Direction Women's Running Vestas

SIZE VEST SIZING (UNISEX)
SM 21 - 36 inch / 53 - 91 cm
MD 24 - 40 inch / 61 - 102 cm
LG 28 - 42 inch / 71 - 107 cm
XL 38 - 46 inch / 97 -117 cm

How to Meaure:

RIBS: Measure around the bottom of your ribs.

Ultimate Direction TRAIL VEST / HIGHLAND VEST SIZE CHART

SIZE VEST SIZING (UNISEX)
XS/SM 20 - 40 inch / 50.8 - 101.6 cm
MD/LG 30 - 46 inch / 76.2 - 116.84 cm

 

How to Meaure:

RIBS: Measure around the bottom of your ribs.

Ultimate Direction MEN'S/UNISEX PACKS

Size Torso (in)/Torso (cm) Chest (in)/Chest (cm)
SM/MD 17 / 43.18 26 - 39 / 66.04 - 99.06
MD/LG 18.5 / 46.99 36 - 48 / 91.44 - 121.92


How to Measure: 

TORSO: Measure the distance between the top edge of the shoulders or C7 vertebrae (the one that protrudes when looking down) to the top crest of the hip bone (pelvis).

CHEST: Measure around the widest part of your chest, keeping the measuring tape horizontal.

Ultimate Direction Fastpackher

Size Torso (cm) Chest (cm)
SM/MD 36.83 60.96 - 95.25
MD/LG 40.64 88.90 - 106.68


How to Measure: 

TORSO: Measure the distance between the top edge of the shoulders or C7 vertebrae (the one that protrudes when looking down) to the top crest of the hip bone (pelvis).

CHEST: Measure around the widest part of your chest, keeping the measuring tape horizontal.

 

Ultimate Direction Fastpackher 2.0

Size Chest (in)
X/S 21-47
M/L 23-49


How to Measure: 

TORSO: Measure the distance between the top edge of the shoulders or C7 vertebrae (the one that protrudes when looking down) to the top crest of the hip bone (pelvis).

CHEST: Measure around the widest part of your chest, keeping the measuring tape horizontal.

Ultimate Direction ULTRA GAITER

Size Men's Shoes Women's Shoes
SM US 5-10 EU 37-43 US 7-12 EU 37-43
MD US 8-11 EU 41-44 US 10-13 EU 41-44
LG US 9-13 EU 42-47 US 11-14 EU 42-47

 

Ultimate Direction Socks

Shoes Size (US Size) S/M L/XL
Women's US 6-10 US 11-14
Men's US 7-9 US 10+

 

Ultimate Direction Women's Bottom Sizing

SizeSize Waist (in)Waist (cm) Hip (in)Hip (cm)
XSXS 24 - 2660.96 - 66.04 34 - 3686.36 - 91.44
SMSM 27 - 2868.58 - 71.12 37 - 3993.98 - 99.06
MDMD 29 - 3173.66 - 78.74 39 - 4199.06 - 104.14
LGLG 32 - 3481.28 - 86.36 41 - 43104.14 - 109.22

How to Measure: 

WAIST: Measure around the narrowest part of your waist, keeping the measuring tape horizontal.

HIPS: Measure around the widest part of your hips.

 

Colour: Onyx
Onyx
Ud Blue
Ultimate Direction Blazek 18 Backpack Onyx

Onyx

2026-06-05 2026-06-12

WITH THE RIGHT GEAR, GETTING IN YOUR ELEMENT IS A NATURAL FIT.

The Blazek 15 is a spacious day pack that will match you stride for stride with soft fabrics, stretchable pocket options and hydration. Front and back storage, including a compartment for a 2L bladder, plus compression cords help distribute gear evenly for a pack that feels like an extension of your body.

FEATURES

  • Padded and breathable EVA back reduces heat and cushions any pressure
  • Shoulder straps are padded and ventilated
  • Hydration reservoir compatible and mesh side water bottle pockets
  • Adjustable sternum strap expands for when you're breathing heavy
  • Trekking pole connections
  • Hydration / Soft flasks not included

SPECS

  • Volume: 18 L / 1098 in3
  • Torso Size: 25-50" / 63-128 cm
  • Dimensions (L x W x H): 10" x 6" x 18.5" / 26 x 15 x 47 cm
  • Gender: Unisex
  • Weight: 16.8 oz / 478 g
  • No. of Exterior Pockets: 9
  • Reflectivity: Yes
  • Reservoir Compatible: Yes

MATERIALS

  • Primary/Body: 100D Nylon

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