Kajka X-Lätt 45 S/M Fossil 45L-S/M

Name: Kajka X-Lätt 45 S/M Fossil 45L-S/M
Brand: My Store
Price: 114.0 USD
Availability: InStock

Lightweight trekking backpack with multiple functional and designed with repairability in mind.

Availability: Many in stock

$114.00 $380.00 (-70%)

Color: Fossil Fossil Green

Size: 45L-S/M 45L-S/M

size

Men's Size Chart

All measurements refer to body size, not garment dimensions, and are in centimeters unless noted.

Jackets & Tops — Classic Fit (cm)

Measurement	XS	S	M	L	XL	XXL	XXXL
Chest	86	92	98	104	110	116	122
Waist	72	78	84	90	96	102	108
Seat	88	94	100	106	112	118	124
Arm Length	83	84.5	86	87.5	89	90.5	92

Jackets & Tops — New Fit (cm)

Measurement	XXS	XS	S	M	L	XL	XXL	XXXL
Chest	83	89	95	101	107	114	123	132
Waist	70	76	82	88	96	104	113	122
Seat	82	88	94	100	106	113	120	128
Arm Length	83	84	85	86	87	88	88	89

Pants & Shorts — EU / UK / US Sizes (cm)

EU	42	44	46	48	50	52	54	56	58	60
UK / US	27–28"	29"	30–31"	32"	33–34"	36"	37"	38–39"	40"	41–42"
Waist	72	76	80	84	88	93	98	104	110	116
Seat	84	88	92	96	100	104	108	113	118	123

Pants & Shorts — New Fit (EU 42–62)

EU	42	44	46	48	50	52	54	56	58	60	62
UK / US	28"	29"	30"	32"	34"	36"	38"	40"	42"	44"	46"
Waist	72	76	80	84	88	93	98	104	110	116	122
Seat	84	88	92	96	100	104	108	113	118	123	128

Pants & Shorts — International Sizes (cm)

Measurement	XS	S	M	L	XL	XXL	XXXL
Waist	72	78	84	90	96	102	108
Seat	88	94	100	106	112	118	124

Inseam by Length Option (cm)

Length	Inner Leg Length	EU Length Size	UK / US Length Size
Short	30	Short	30"
Regular	32	Regular	32"
Long	34	Long	34"
Raw	36	Raw (New Fit)	36"

Not every model is offered in all lengths — check the individual product page. Where no inseam length is specified, men's trousers follow the long length.

Women's Size Chart

All measurements refer to body size, not garment dimensions, and are in centimeters unless noted.

Jackets, Tops & Dresses — Classic Fit (cm)

Measurement	XXS	XS	S	M	L	XL	XXL
Bust	76	82	88	94	100	106	116
Waist	60	66	72	78	84	90	96
Seat	86	92	98	104	110	116	122
Arm Length	74.5	76	77.5	79	80.5	82	83.5

Jackets, Tops & Dresses — New Fit (cm)

Measurement	XXS	XS	S	M	L	XL	XXL	XXXL
Bust	78	84	90	96	102	111	120	129
Waist	63	69	75	81	88	97	107	117
Seat	84	90	96	102	108	117	126	135
Arm Length	76	77	78	79	79	80	81	81

Pants, Shorts & Skirts — EU / UK / US (cm)

EU	32	34	36	38	40	42	44	46	48	50
UK	4	6	8	10	12	14	16	18	20	22
US	24–25"	26"	27–28"	29"	30–31"	32–33"	34"	35–36"	37"	38"
Waist	60	64	68	72	76	80	84	88	92	96
Seat	86	90	94	98	102	106	110	114	118	122

Pants, Shorts & Skirts — New Fit (EU 32–54)

EU	32	34	36	38	40	42	44	46	48	50	52	54
UK	4	6	8	10	12	14	16	18	20	22	24	26
US	0	2	4	6	8	10	12	14	16	18	20	22
Waist	63	67	71	75	79	83	88	94	100	107	113	120
Seat	84	88	92	96	100	104	108	114	120	126	132	138

Inseam by Length Option (cm)

Length	Inner Leg Length	UK / US Length Size
Short	30	30"
Regular	32	32"
Long	34	34"
Raw	36	36"

Where no inseam length is specified, women's trousers follow the regular length. Inseam availability varies by product.

Kids' Size Chart

Children's sizes are listed by body height in centimeters; age ranges are approximate.

Kids' Clothing — Body Measurements (cm)

Size (Body Height)	104	110	116	122	128	134	140	146	152	158
Approx. Age	3–4	4–5	5–6	6–7	7–8	8–9	9–10	10–11	11–12	12–13
Chest	55	58	61	64	67	70	73	76	79	82
Waist	54	56	58	60	62	64	66	68	70	72
Seat	58	61	64	67	70	73	76	79	82	85
Inseam	43	46.5	50	53.5	57	60.5	64	67.5	71	74.5

Sizing Tips for Kids

Size by height, not age. A child's correct size is their body height in centimeters — the age column is only an average guide.
Layering allowance. If the child will wear the garment over a mid layer, size up one step for room to move.
Between sizes? Choose the larger size for a looser fit, or the smaller for a closer fit.
Re-measure each season. Children grow quickly — check height before ordering a new season's kit.

Hats & Footwear

Headwear and footwear sizing.

Headwear — Head Circumference (in)

Size	S	M	L	XL
Head Circumference	21.3–22"	22–22.8"	22.8–23.6"	23.6–24.4"

Headwear — Combined Sizes (in)

Size	S/M	L/XL
Head Circumference	21.3–22.8"	22.8–24.4"

Equivalent in centimeters: S 54–56 · M 56–58 · L 58–60 · XL 60–62 / S-M 54–58 · L-XL 58–62.

Footwear — International Conversion

Size	S	M	L	XL
EU	36–38	39–41	42–44	45–47
UK	3.5–5	5.5–7.5	8–10	10.5–12
US Men	—	6.5–8.5	9–11	11.5–13
US Women	6–7.5	8–10	10.5–12	—
Foot Length	8.7–9.4"	9.4–10.2"	10.2–11"	11–11.8"

Foot length in centimeters: S 22–24 · M 24–26 · L 26–28 · XL 28–30.

Fit the larger foot. Measure at the end of the day and stand while measuring — the same body measurements used for apparel apply to footwear length.

How to Measure

Ask a friend to measure you while you stand straight and relaxed, without shoes, wearing only close-fitting clothing.

Body Measurements

Chest / Bust. Measure straight under your arms, around the fullest part of your chest or bust. Keep the tape level and snug — not tight.
Waist. Measure around the narrowest part of your torso, at your natural waistline.
Seat. Standing with feet hip-width apart, measure around your hips at the widest part.
Arm Length. Bend the elbow slightly, then measure from the centre back of the neck, over the shoulder to the elbow, and down to the wrist.
Inner Leg Length. Stand straight and measure from the crotch down the inside of the leg to the floor.
Head. Measure around the biggest part of the head, just above the eyebrows.
Foot Length. Stand and measure from the heel to the tip of the longest toe.

Measuring Tips

Measure over an undergarment or base layer only — bulky clothing distorts the result.
Keep the tape horizontal and comfortably snug; it should not compress the body.
Take measurements in centimeters for the closest match to the charts.
Write every measurement down and compare against the table rather than guessing from your usual size.

Fit Guide

Garments are grouped into fit categories so you can match the cut to the activity.

Fit Categories

Fit	How It Wears
Next To Skin	Cut snug to the body to enhance moisture management and thermal efficiency while keeping freedom of movement — used for tights and base layers.
Slim Fit	Shaped close to the body, using stretch and stretch-blend fabrics for freedom of movement on the trail.
Regular Fit	Extra versatile and not closely fitted — ideal for cross-seasonal use and multi-layering, contoured with room for movement.
Relaxed / Comfort Fit	Loose on the body for breathability in warm conditions, and roomy enough to wear over a thicker base layer or trousers.

Fit Versions

Classic Fit. The original size scale — choose your usual size from the Classic Fit tables.
New Fit. A refined scale with updated measurements across the range; New Fit sizes differ from Classic Fit, so always use the matching table.
Mix freely. Many garments are available in one fit only — the product page states which fit applies.

Choosing Your Size

Start with body measurements. Compare your measurements against the table instead of relying on your usual size in another brand.
Check the product page. Some trousers come in different inseam lengths — review the product detail before ordering.
Think about layering. For jackets and outdoor tops, consider whether you will wear base layers or fleece underneath.

Measurements refer to body size, not garment dimensions. If you fall between two sizes, choose the larger size for a looser fit or the smaller size for a closer fit.

Quick Reference

Men's trousers default = Long Women's trousers default = Regular Between sizes? Size up for looser Jackets Layer into your choice Measure in centimeters

X at Fjällräven stands for 'product exploration' and this time we have explored how to perfectly optimise the balance between durability, functionality and low weight. The Kajka X-Lätt 45 is a long-lasting trekking backpack that is lightweight, rich in functional features and designed with repairability in mind. The 45 L main compartment is made with our hardwearing fabric, Vinylon F, around our iconic wooden frame. The back length is fully adjustable, and the stretch side pockets and removable front pocket sleeve offer extra storage. The inside pocket is detachable and can be used separately as a small crossbody bag for essentials. This S/M-sized model has slightly tapered shoulder straps to better fit smaller frames and give more room for the bust, plus a slightly shorter and more curved hip belt.

Article number: {{selectedVariant.parentCode}}

Gender: Unisex

Family: Singi

Activity: Trekking

Features: Lightweight

Made from Vinylon F fabric with recycled 330D polyamide shoulder straps, base, back panel and hip belt.
45 L main compartment with snow lock closure.
Carrying system can easily be adapted to fit a wide range of back lengths.
Hydration system compatible and designed with repairability in mind.
Shoulder straps and hip belt size S/M.

Material: Vinylon F: 100% vinylal
100% vinylal

Lining: 100% polyamide (recycled)

Washing: do not wash

Dry cleaning: do not dry clean

Bleaching: do not bleach

Drying: do not tumble dry

Ironing: do not iron

Additional care instructions: soft brush and lukewarm water

Height: 63 cm

Width: 30 cm

Depth: 28 cm

Shoulder strap length: 86 cm

Hip belt length: 123 cm

Min. back length: 40 cm

Adjustable back length: Yes

Max. back length: 52 cm

Volume: 45 l

Recommended load up to: 13 kg

Laptop case: No

Weight: 1160 g

Weight reference: in One size

Number of pockets: 8

Pockets: Inner pocket(s), Outside stretch pocket(s), Zippered inside pocket(s), Zippered outside pocket(s)

Carrying system: Adjustable, Wooden frame

Chest strap: Yes

Detachable chest strap: Yes

Hip belt: Yes

Detachable hip belt: Yes

Top lid: Fixed top lid

Top opening: Yes

Front opening: No

Bottom opening: No

Snowlock: Yes

Equipment features: Holder for hiking poles, Expandable side pocket, Side compression straps

Hydration system compatible: Yes

Rain cover included: No

Seat pad included: No

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Kajka X-Lätt 45 S/M Fossil 45L-S/M

Fjällräven

Men's Size Chart

Jackets & Tops — Classic Fit (cm)

Jackets & Tops — New Fit (cm)

Pants & Shorts — EU / UK / US Sizes (cm)

Pants & Shorts — New Fit (EU 42–62)

Pants & Shorts — International Sizes (cm)

Inseam by Length Option (cm)

Women's Size Chart

Jackets, Tops & Dresses — Classic Fit (cm)

Jackets, Tops & Dresses — New Fit (cm)

Pants, Shorts & Skirts — EU / UK / US (cm)

Pants, Shorts & Skirts — New Fit (EU 32–54)

Inseam by Length Option (cm)

Kids' Size Chart

Kids' Clothing — Body Measurements (cm)

Sizing Tips for Kids

Hats & Footwear

Headwear — Head Circumference (in)

Headwear — Combined Sizes (in)

Footwear — International Conversion

How to Measure

Body Measurements

Measuring Tips

Fit Guide

Fit Categories

Fit Versions

Choosing Your Size

Quick Reference

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