Jack & Jones Junior 3-pack – organic cotton boxers for boys

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Reference price 10.09.2026: €19,99

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Trunks models are fitted like boxers, but with a shorter leg, so they cover less of the leg and provide excellent freedom of movement. This SENSE TRUNKS 3-pack NOOS JNR set from the Jack & Jones Junior collection offers three pairs of comfortable, modern boys' underwear, ideal for everyday wear. They are made from a light, stretchy single jersey knit that ensures softness against the skin and a comfortable, adaptive fit all day long.

The elastic waistband with a logo provides a secure fit and a modern sporty look, while the close fit keeps everything in place without unnecessary bulk or seams under clothing. Trunks are perfect for boys aged 8 to 16 who seek comfort but like to look cool – from school and sports activities to relaxed weekend outfits. The simple design and neutral colors are easy to combine with the rest of the wardrobe, making this 3-pack a practical choice for any underwear drawer.

The Jack & Jones Junior collection offers a fresh, trendy, and urban style adapted for younger ages, yet inspired by adult fashion. The focus is on high-quality, comfortable pieces in which boys feel confident and modern. These trunks models perfectly fit that philosophy – simple, functional, and designed to follow every movement.

The main fabric is JJ-AC-ES3 circular knit single jersey made from 95% organic cotton and 5% elastane, which combines natural breathability and softness with elasticity for a good fit. The grammage of approximately 180 g/m² and fine yarn (34/s + 20D, Z twist) create a sturdy yet pleasantly light knit, durable enough for everyday wear and frequent washing.

Product: boys' trunks underwear, 3-pack
Cut: close fit like boxers, but with a shorter leg
Material: 95% organic cotton, 5% elastane; circular knit single jersey (approx. 180 g/m²)
Waistband: elastic waistband for a secure and comfortable fit
Purpose: boys 8–16 years, for everyday wear
Feel: light, soft, stretchy, and breathable knit

CLOTHING – BABIES (0–24 MONTHS)

AGE	SIZE (cm)	BODY HEIGHT (cm)	CHEST CIRCUMFERENCE (cm)	WAIST CIRCUMFERENCE (cm)	HIP CIRCUMFERENCE (cm)
0–1 month	50	45–50	40–42	38–40	40–42
1–2 months	56	51–56	42–44	40–42	42–44
2–4 months	62	57–62	44–46	42–44	44–46
4–6 months	68	63–68	46–48	44–45	46–48
6–9 months	74	69–74	48–50	45–46	48–50
9–12 months	80	75–80	50–52	46–47	50–52
12–18 months	86	81–86	52–54	47–48	52–54
18–24 months	92	87–92	54–56	48–49	54–56
2–3 years	98	93–98	56–58	49–50	56–58

CLOTHING – GIRLS AND BOYS (3–16 YEARS)

AGE	SIZE (cm)	BODY HEIGHT (cm)	CHEST CIRCUMFERENCE (cm)	WAIST CIRCUMFERENCE (cm)	HIP CIRCUMFERENCE (cm)
3–4 years	104	99–104	58–60	50–52	58–60
4–5 years	110	105–110	60–62	52–54	60–63
5–6 years	116	111–116	62–64	54–55	63–66
6–7 years	122	117–122	64–66	55–56	66–68
7–8 years	128	123–128	66–68	56–58	68–71
8–9 years	134	129–134	68–70	58–59	71–74
9–10 years	140	135–140	70–72	59–61	74–77
10–11 years	146	141–146	72–75	61–63	77–80
11–12 years	152	147–152	75–78	63–65	80–84
12–13 years	158	153–158	78–81	65–67	84–87
13–14 years	164	159–164	81–84	67–69	87–90
14–15 years	170	165–170	84–87	69–71	90–93
15–16 years	176	171–176	87–90	71–73	93–96

FOOTWEAR – BABIES AND CHILDREN (EU / UK / US)

EU	UK	US	FOOT LENGTH (cm)
16	0.5	1	8.1–9.0
17	1	1.5	9.0–9.8
18	1.5	2.5	9.8–10.6
19	2.5	3.5	10.6–11.5
20	3.5	4.5	11.5–12.3
21	4.5	5.5	12.3–12.8
22	5	6	12.8–13.2
23	6	7	13.2–13.6
24	6.5	7.5	13.6–14.0
25	7.5	8.5	14.0–14.5
26	8	9	14.5–14.9
27	9	10	14.9–15.3
28	10	11	15.3–15.7
29	10.5	11.5	15.7–16.1
30	11	12	16.1–16.6
31	12	12.5	16.6–17.0
32	13	13.5	17.0–17.4
33	1	1.5	17.4–17.8
34	2	2.5	17.8–18.3
35	2.5	3	18.3–18.7
36	3	3.5	18.7–19.1
37	4	4.5	19.1–19.5
38	5	5.5	19.5–20.0
39	6	6.5	20.0–20.4
40	6.5	7	20.4–20.8

HOW TO MEASURE YOUR CHILD CORRECTLY

BODY HEIGHT: THE CHILD SHOULD STAND UPRIGHT, WITHOUT SHOES, WITH HEELS TOGETHER; MEASURE FROM THE TOP OF THE HEAD TO THE FLOOR.

CHEST CIRCUMFERENCE: MEASURE AT THE WIDEST PART OF THE CHEST, UNDER THE ARMPITS, WITH THE TAPE FOLLOWING THE BODY LINE.

WAIST CIRCUMFERENCE: MEASURE AT THE NARROWEST PART OF THE WAIST, USUALLY ABOVE THE BELLY BUTTON.

HIP CIRCUMFERENCE: MEASURE AT THE WIDEST PART OF THE HIPS, WITH THE TAPE FOLLOWING THE BODY LINE.

FOOT LENGTH: THE CHILD STANDS ON A SHEET OF PAPER; MARK THE TIP OF THE LONGEST TOE AND THE HEEL, THEN MEASURE THE DISTANCE. MEASURE BOTH FEET AND USE THE LONGER ONE.

NOTES

– SIZES MAY VARY DEPENDING ON THE MANUFACTURER AND CUT.
– WE RECOMMEND CHOOSING A LARGER SIZE IF YOU ARE BETWEEN TWO SIZES.
– CHILDREN'S FEET GROW QUICKLY – LEAVE 0.5–1 CM OF EXTRA SPACE IN SHOES.
– WHEN SHOPPING ONLINE, ALWAYS CHECK THE SIZE CHART SPECIFIC TO EACH BRAND.

Size guide

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Size	Height (cm)	Age	In stock

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Clothing – babies (0–24 months)

Size	Age	Height (cm)	Chest	Waist	Hips
50	0–1 mo.	45–50	40–42	38–40	40–42
56	1–2 mo.	51–56	42–44	40–42	42–44
62	2–4 mo.	57–62	44–46	42–44	44–46
68	4–6 mo.	63–68	46–48	44–45	46–48
74	6–9 mo.	69–74	48–50	45–46	48–50
80	9–12 mo.	75–80	50–52	46–47	50–52
86	12–18 mo.	81–86	52–54	47–48	52–54
92	18–24 mo.	87–92	54–56	48–49	54–56
98	2–3 y.	93–98	56–58	49–50	56–58

All measurements in cm.

Clothing – girls & boys (3–16 years)

Size	Age	Height (cm)	Chest	Waist	Hips
104	3–4 y.	99–104	58–60	50–52	58–60
110	4–5 y.	105–110	60–62	52–54	60–63
116	5–6 y.	111–116	62–64	54–55	63–66
122	6–7 y.	117–122	64–66	55–56	66–68
128	7–8 y.	123–128	66–68	56–58	68–71
134	8–9 y.	129–134	68–70	58–59	71–74
140	9–10 y.	135–140	70–72	59–61	74–77
146	10–11 y.	141–146	72–75	61–63	77–80
152	11–12 y.	147–152	75–78	63–65	80–84
158	12–13 y.	153–158	78–81	65–67	84–87
164	13–14 y.	159–164	81–84	67–69	87–90
170	14–15 y.	165–170	84–87	69–71	90–93
176	15–16 y.	171–176	87–90	71–73	93–96

All measurements in cm.

Shoes – babies & kids (EU / UK / US)

EU	UK	US	Foot length (cm)
16	0.5	1	8,1–9,0
17	1	1.5	9,0–9,8
18	1.5	2.5	9,8–10,6
19	2.5	3.5	10,6–11,5
20	3.5	4.5	11,5–12,3
21	4.5	5.5	12,3–12,8
22	5	6	12,8–13,2
23	6	7	13,2–13,6
24	6.5	7.5	13,6–14,0
25	7.5	8.5	14,0–14,5
26	8	9	14,5–14,9
27	9	10	14,9–15,3
28	10	11	15,3–15,7
29	10.5	11.5	15,7–16,1
30	11	12	16,1–16,6
31	12	12.5	16,6–17,0
32	13	13.5	17,0–17,4
33	1	1.5	17,4–17,8
34	2	2.5	17,8–18,3
35	2.5	3	18,3–18,7
36	3	3.5	18,7–19,1
37	4	4.5	19,1–19,5
38	5	5.5	19,5–20,0
39	6	6.5	20,0–20,4
40	6.5	7	20,4–20,8

How to measure

Height: Child stands straight against a wall without shoes; measure from the top of the head to the floor.
Chest: Around the body under the arms, over the widest part of the chest.
Waist: Around the natural waist, just above the belly button.
Hips: Around the widest part of the hips.
Foot: Child stands on a sheet of paper; measure from heel to the longest toe and add 0.5–1 cm.

If your child is between two sizes, choose the larger one.

Jack & Jones Junior 3-pack – organic cotton boxers for boys

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