Home Atlas Explorer 20L Backpack

Atlas Explorer 20L Backpack

Regular price $65.00 Sale price $19.50
70% OFF
Color: Black

Color
Size: O/S

Size

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Columbia Size Guide
Get ready for the outdoors

Size Guide

Use body measurements and foot length to find your size. Measurements are in inches unless a chart says otherwise.

Men's Tops Size Chart

Measure around your body and compare with the chart. Big and Tall styles are designed for specific body shapes.

Body measurements · inches
Size Chest Waist Hips
XS 35 29 34
S 36–37 30–31 35–36
M 39–41 33–35 38–40
L 42.5–44 36–38 41.5–43
XL 46.5–48 40–42 44.5–47
XXL 50.5–52 44–46 49.5–51
Big & Tall Sizes
Fit Size Chest Waist Hips
Big 1X 46–49 39–42 44.5–46
Big 2X 50–52 43–45 47.5–49
Big 3X 54–56 47–49 50.5–52
Big 4X 58–60 51–53 53.5–56
Big 5X 62–64 55–57 56.5–58
Big 6X 66–68 59–61 59.5–61
Tall LT 42.5–44 36–38 41.5–43
Tall XLT 46–49 39–42 44.5–46
Tall 2XLT 50–52 43–45 47.5–49
Tall 3XLT 54–56 47–49 50.5–52
Tall 4XLT 58–60 51–53 53.5–56
Tall 5XLT 62–64 55–57 56.5–58

Men's Bottoms Size Chart

Use waist and hip measurements to find your fit.

Body measurements · inches
Size Pant Size Waist Hips
XS 28 29 34
S 29–31 30–31 35–36
M 32–34 33–35 38–40
L 35–36 36–38 41.5–43
XL 38–40 40–42 44.5–47
XXL 42–44 44–46 49.5–51

Big & Tall bottoms: Big sizes 1X–6X and Tall sizes LT–5XLT use different cut specifications. Check the selected style's size options for availability.

Women's Tops Size Chart

Compare bust, waist, and hip measurements in inches.

Body measurements · inches
Size Bust Waist Hips
XS 33.5 26.5 35.5
S 34.5–35.5 28–29 37–38
M 36.5–37.5 30–31 39–40
L 39–40.5 32.5–34 41.5–43
XL 42–43.5 35.5–37.5 44.5–46.5
XXL 44–46 38–41 47–50
Plus Sizes
Size Bust Waist Hips
1X 43–45 36–38 46–48
2X 47–49 40.25–42.5 50–52
3X 51–53 44.75–47 54–56

Women's Bottoms & Dresses

Bottoms use pant size; dress sizing follows the same bust, waist, and hip measurements.

Body measurements · inches
Size Pant / Dress Size Waist Hips
XS 2 26.5 35.5
S 4–6 28–29 37–38
M 8–10 30–31 39–40
L 12–14 32.5–34 41.5–43
XL 16–18 35.5–37.5 44.5–46.5
XXL 20 38–41 47–50

Plus bottoms: 1X: 16W–18W, waist 36–38, hips 46–48; 2X: 20W–22W, waist 40.25–42.5, hips 50–52; 3X: 24W, waist 44.75–47, hips 54–56.

Boys' Apparel Size Chart

Measurements are body measurements. Choose size using the closest larger measurement.

Body measurements · inches
Size Approx. Age Chest Waist Hips Height
XXS 4/5 22–23 21–21.5 23–24 41–44.25
XS 6/7 24–25.5 22–23.5 25–26.5 47.5–49.5
S 8 26.5 24.5 27.75 52
M 10/12 27.5–28.5 25.5–26.5 29–30.5 55.5–58.5
L 14/16 30.5–32 28–29.5 32–33.5 61.5–64
XL 18 33.5 31 35 66.5
Girls' Sizes
Size Approx. Age Chest Waist Hips Height
XXS 4/5 22–23 21–21.5 23–24 41–44.25
XS 6/7 24–26 22–23.5 25–27.5 47.5–50.5
S 8 27 24.25 28.5 52.5
M 10/12 28.5–30 25–26 30–32 55–58
L 14/16 31.5–33.5 28–30 34–36 61–62.5
XL 18 35.5 32 38 62.5
Toddler & Infant Measurements
Size Chest Waist Hips Weight (lb) Height
2T 20 20.5 20.75 30 35
3T 21 20.5 22 33 38
4T 22 21 23 38 41
0–3M 16.5 17 17 14 22.5
3–6M 17.5 18 18 18 25.5
6–12M 18.5 19 19 20 29
12–18M 19.25 19.75 19.75 28 32
18–24M 20 20.5 20.75 30 35

Men's Footwear Size Chart

Measure both feet while wearing the socks you plan to use with the shoes. Use the longer foot.

Foot length and width · inches
US UK EU Foot Length Foot Width
7 6 40 9.6–9.7 3.7–3.9
7.5 6.5 40.5 9.7–9.9 3.7–3.9
8 7 41 9.9–10.1 3.7–3.9
8.5 7.5 41.5 10.1–10.2 3.8–4.0
9 8 42 10.2–10.4 3.8–4.0
9.5 8.5 42.5 10.4–10.6 3.9–4.0
10 9 43 10.6–10.7 3.9–4.1
10.5 9.5 43.5 10.7–10.9 3.9–4.2
11 10 44 10.9–11.1 4.0–4.2
11.5 10.5 44.5 11.1–11.2 4.1–4.2
12 11 45 11.2–11.4 4.1–4.3
13 12 46 11.6–11.7 4.2–4.4
14 13 47 11.7–12.1 4.3–4.4
15 14 48 12.1–12.4 4.3–4.5
16 15 49 12.4–12.8 4.4–4.6
17 16 50 12.8–13.1 4.5–4.7

Footwear widths vary by style. Where available, compare your measured foot width with the product's specific width chart.

Women's Footwear Size Chart

Use your longest foot measurement and choose the closest larger size when between sizes.

Foot length and width · inches
US UK EU Foot Length Foot Width
5 3 36 8.6–8.7 3.3–3.5
5.5 3.5 36.5 8.7–8.9 3.3–3.5
6 4 37 8.9–9.1 3.3–3.5
6.5 4.5 37.5 9.1–9.3 3.4–3.6
7 5 38 9.3–9.4 3.4–3.6
7.5 5.5 38.5 9.4–9.6 3.5–3.7
8 6 39 9.6–9.7 3.5–3.7
8.5 6.5 39.5 9.7–9.9 3.5–3.7
9 7 40 9.9–10.1 3.6–3.8
9.5 7.5 40.5 10.1–10.2 3.6–3.8
10 8 41 10.2–10.4 3.7–3.9
10.5 8.5 41.5 10.4–10.6 3.7–3.9
11 9 42 10.6–10.7 3.8–4.0
11.5 9.5 42.5 10.7–10.9 3.8–4.0
12 10 43 10.9–11.1 3.9–4.1

Kids' Footwear Size Chart

Foot length is shown in inches. Select the chart for the child's size range.

Foot measurements · inches
Kids' Sizes
US UK EU Foot Length
1 13 32 7.6–7.8
2 1 33 7.9–8.1
3 2 34 8.2–8.4
4 3 35 8.6–8.7
5 4 37 8.9–9.1
6 5 38 9.3–9.4
7 6 39 9.6–9.7
Little Kids' Sizes
US UK EU Foot Length
8 7 25 5.6–5.7
9 8 26 5.9–6.1
10 9 27 6.2–6.4
11 10 28 6.6–6.7
12 11 29 6.9–7.1
13 12 31 7.2–7.4
Toddler Sizes
US UK EU Foot Length
4 3 21 4.3–4.4
5 4 22 4.6–4.8
6 5 23 4.9–5.1
7 6 24 5.2–5.4

Gloves & Mittens

Measure hand length and circumference. Choose your size based on the larger measurement.

Hand measurements · inches
Category Size Hand Length Hand Circumference
Men's / Unisex S 6.75–7.5 7.375–8
Men's / Unisex M 7.5–8.25 8–8.625
Men's / Unisex L 8.25–9 8.625–9.25
Men's / Unisex XL 9–9.75 9.25–9.875
Women's XS 5.75–6.5 5.25–6
Women's S 6.5–7.25 6–6.75
Women's M 7.25–7.75 6.75–7.5
Women's L 7.75–8.25 7.5–8.25
Women's XL 8.25–9 8.25–9

Measure the dominant hand around the palm below the knuckles, excluding the thumb. For kids, glove size uses the listed hand length/circumference range plus apparel size: XS 4.5–5 in (4–6), S 5–5.5 in (7–8), M 5.5–6 in (10–12), L 6–6.5 in (14–16), XL 6.5–7 in (18).

Hats, Socks & Other Accessories

Measurements · inches unless noted

Adult Hats

Size Hat Size Head Circumference
S/M 6 5/8–7 21–22
L/XL 7–7 3/4 22–24.25
Adjustable One Size 6 5/8–7 3/4 21.25–24.5
One Size 6 1/2–7 1/2 21–23.5

Socks

Size EU Shoe UK Shoe Men's US Women's US Youth US
XS 31–34 12–2 — — 13–3
S 35–38 3–5 — 4–7.5 4–6
M 39–42 6–8 6–9 8–11.5 —
L 43–46 9–11 10–13 — —
XL 47–49 12–15 13–15 — —
BeltsS: pant 30–32 / waist 28–30 in. M: 34–36 / 32–34 in. L: 38–40 / 36–38 in. XL: 42–44 / 40–42 in.
Arm SleevesXS 12.25 in · S 13 in · M 13.75 in · L 14.5 in · XL 15.75 in bicep circumference.
Kids' HatsS/M: head 19–21 in. L/XL: 21–22.75 in. One Size: 19.75–22 in.

Hat fit: Measure around the crown above the eyebrows and ears. Infant/toddler one-size head circumference: infant 17.25–19 in; toddler 19–20.5 in.

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Atlas Explorer 20L Backpack

Atlas Explorer 20L Backpack
Every commute deserves a sidekick that carries it all. Moisture repellent tech keeps light rain out while a laptop sleeve keeps your device nice and protected. A foam-padded back provides extra comfort, too.