New arrival

MEN | RUNNING

ACTIVE ALPHA LONG PANTS

$79.00

Color: 09 - Black

Size

S M L XL XXL

Product variants

View details

Shoes Size Chart Men Clothing Size Chart Women Clothing Size Chart

Shoes Size Chart

Unisex/Men's (US)	Women's Size (USW)	EU	UK	Japan (CM)
4.5	6	36	3.5	22.5
5	6.5	36.5	4	23.0
5.5	7	37	4.5	23.5
6	7.5	38	5	24.0
6.5	8	38.5	5.5	24.5
7	8.5	39	6	25.0
7.5	9	40	6.5	25.5
8	9.5	40.5	7	26.0
8.5	10	41	7.5	26.5
9	10.5	42	8	27.0
9.5	11	42.5	8.5	27.5
10	11.5	43	9	28.0
10.5	12	44	9.5	28.5
11	12.5	44.5	10	29.0
11.5	13	45	10.5	29.5
12	13.5	46	11	30.0
12.5	14	46.5	11.5	30.5
13	14.5	47	12	31.0
14	15.5	48.5	13	32.0

Shoes General Sizing Tips

All shoe sizes on product pages reflect US shoe sizing.

Unisex Sizing

For a women’s fit when ordering "unisex" shoes, please order 1.5 sizes smaller than your usual US Women’s size.
E.g. if you usually fit a US Women’s 9, please order a Unisex US 7.5.

Select Width

Men's footwear:

D is the standard width and 2E is a wide fit

Women's footwear:

B is the standard width and D is a wide fit.

Shoes Width Chart

2A	B	D	2E
		Men's Standard	Men's Wide
Women's Narrow	Women's Standard	Women's Wide

Get Fit

We recommend measuring your feet at home by following these easy steps:

What you will need:
- Pen/Pencil
- Paper
- Ruler/measuring tape

Place the piece of paper under your foot and stand with your heel against a wall
Trace your foot as closely as possible
(Be sure to trace both feet, as one foot is often longer than the other)
With the tracing measure a straight line from the back of the heel to the longest toe
(This will give you the length of your foot in centimetres)
Add 1-1.5cm to this measurement to give you the most accurate length for your shoes
Take this total measurement in cm and using our international sizing chart match it to your US size.

Men's and Unisex Clothing Size Guide

TOPS

*STANDARD FIT

	CHEST		WAIST		HEIGHT
	INCHES	CM	INCHES	CM	INCHES	CM
XS	32～34	81～87	26～29	67～73	65～67	165～171
S	35～37	89～95	30～32	75～81	67～69	170～176
M	38～41	97～103	33～35	83～89	69～71	175～181
L	41～44	105～111	36～38	91～97	71～73	180～186
XL	44～47	113～119	39～41	99～105	73～75	185～191
2XL	48～50	121～127	42～44	107～113	75～77	190～196

TOPS

*SLIM FIT

	CHEST		WAIST		HEIGHT
	INCHES	CM	INCHES	CM	INCHES	CM
S	33～35	85～91	27～30	71～77	63～66	162～168
M	35～37	89～95	29～31	75～81	65～68	162～173
L	36～38	93～99	31～33	79～85	67～70	172～178
XL	38～40	97～103	32～35	83～89	69～72	177～183
2XL	39～42	101～107	34～36	87～93	71～74	182～188
3XL	40～44	105～111	36～38	91～97	73～76	186～192

CHEST:

MEASURE AROUND THE FULLEST PART

WAIST:

MEASURE AROUND THE NARROWEST PART

HIPS:

WITH YOUR FEET TOGETHER, MEASURE AROUND THE FULLEST PART OF YOUR HIPS

BOTTOMS

*STANDARD FIT

	WAIST		HIPS
	INCHES	CM	INCHES	CM
S	30～32	75～81	35～37	89～95
M	33～35	83～89	38～41	97～103
L	36～38	91～97	41～44	105～111
XL	39～41	99～105	44～47	113～119
2XL	42～44	107～113	48～50	121～127

WAIST:

MEASURE AROUND THE NARROWEST PART.

HIPS:

WITH YOUR FEET TOGETHER, MEASURE AROUND THE FULLEST PART OF YOUR HIPS.

INSEAM:

LENGTH FROM THE TOP OF YOUR INNER LEG ALONG THE INSIDE SEAM TO THE BOTTOM OF YOUR LEG.

SWIMWEAR

MX/EXER SUITS/Exer spats

	WAIST
	INCHES	CM
S	28.0～30.3	71～77
M	29.5～31.9	75～81
L	31.1～33.5	79～85
XL	32.7～35.0	83～89
2XL	34.2～36.6	87～93

SWIMWEAR

	HIP		AROUND HIPBONE
	INCHES	CM	INCHES	CM
S	33.3～36.8	84.5～93.5	27.6～31.3	70～79.5
M	34.4～38.4	87.5～97.5	29.3～32.9	74.5～83.5
L	35.6～40.0	90.5～100.5	30.9～34.4	78.5～87.5
XL	36.8～40.6	93.5～103	32.5～36.0	82.5～91.5

HIP:

WITH YOUR FEET TOGETHER, MEASURE AROUND THE FULLEST PART OF YOUR HIPS.

HIPBONE:

MEASURE AROUND THE FULLEST PART OF YOUR HIPBONE (BELOW WAIST AND AT THE TOP CURVE OF YOUR HIPS).

SOCKS

	Men’s
	US	EU	INCHES	CM
S	4-5.5	35-37	8.7-9.3	22.0-23.5
M	6-7.5	38-40	9.4-10	24.0-25.5
L	8.5-10	41-43	10.2-10.8	26.0-27.5
XL	10.5-12	44-46	11.0-12	28.0-30.5

Women's Clothing Size Guide

TOPS

*STANDARD FIT

	CHEST		WAIST		HEIGHT
	INCHES	CM	INCHES	CM	INCHES	CM
XS	30～32	75～81	23～25	58～64	62～64	157～163
S	32～35	82～88	25～28	64～70	64～66	162～168
M	35～37	89～95	28～30	70～76	66～68	167～173
L	38～40	96～102	30～32	76～82	68～70	172～178
XL	41～43	103～109	32～35	82～88	70～72	177～183
2XL	43～46	110～116	35～37	88～94	72～74	182～188

TOPS

*SLIM FIT

	CHEST		WAIST		HEIGHT
	INCHES	CM	INCHES	CM	INCHES	CM
S	30～32	78～82	23～24	59～63	59～62	152～158
M	31～33	81～85	24～25	62～66	61～64	157～163
L	33～34	84～88	25～27	65～69	63～66	162～168
XL	34～35	87～91	26～28	68～72	65～68	162～173

CHEST:

MEASURE AROUND THE FULLEST PART

WAIST:

MEASURE AROUND THE NARROWEST PART

HIPS:

WITH YOUR FEET TOGETHER, MEASURE AROUND THE FULLEST PART OF YOUR HIPS

BOTTOM

*STANDARD FIT

	WAIST		HIP
	INCHES	CM	INCHES	CM
S	25～28	64～70	35～37	88～94
M	28～30	70～76	38～40	95～101
L	30～32	76～82	40～43	102～108
XL	32～35	82～88	43～45	109～115
2XL	35～37	88～94	46～48	116～122

WAIST:

MEASURE AROUND THE NARROWEST PART.

HIPS:

WITH YOUR FEET TOGETHER, MEASURE AROUND THE FULLEST PART OF YOUR HIPS.

INSEAM:

LENGTH FROM THE TOP OF YOUR INNER LEG ALONG THE INSIDE SEAM TO THE BOTTOM OF YOUR LEG.

SWIMWEAR

	HEIGHT		BUST
	INCHES	CM	INCHES	CM
S	59.8-64.2	152-163	30.7-35.8	78-91
M	61.8-66.1	157-168	33.1-38.2	81-94
L	63.8-68.1	162-173	33.1-38.2	84-97
XL	65.7-68.1	167-173	35.4-38.2	90-97

SWIMWEAR

Exer/MX

	BUST		HIPS
	INCHES	CM	INCHES	CM
S	30.7-32.3	78-82	33.9-35.4	86-90
M	31.9-33.5	81-85	35.0-36.6	89-93
L	33.1-34.6	84-88	36.2-37.8	92-96
XL	34.3-35.8	87-91	37.4-39.0	95-99
2XL	35.4-37.0	90-94	38.6-40.2	98-102

HIP:

WITH YOUR FEET TOGETHER, MEASURE AROUND THE FULLEST PART OF YOUR HIPS.

HIPBONE:

MEASURE AROUND THE FULLEST PART OF YOUR HIPBONE (BELOW WAIST AND AT THE TOP CURVE OF YOUR HIPS).

SOCK

	Women's
	US	EU	INCHES	CM
S	5.5-7	35-37	8.7-9.3	22.0-23.5
M	7.5-9	38-40	9.4-10	24.0-25.5
L	10-11.5	41-43	10.2-10.8	26.0-27.5
XL	12-13.5	44-46	11.0-12	28.0-30.5

ACTIVE ALPHA LONG PANTS

09 - Black / S – Change

DESCRIPTION

Active Alpha Long Pants are crafted from lightweight stretch woven fabric, ensuring maximum mobility as you move. The branded elastic waistband provides a secure and comfortable fit, adapting to your body's movements while you run.
Featuring a zipper on the hem, these pants are easy to put on and take off, allowing for quick changes when needed. The reflective RB logo enhances your visibility during nighttime runs, adding an important safety feature in low-light conditions.

Benefit:
- Lightweight stretch woven fabric for maximum mobility
- Branded waist elastic band
- Zipper on the hem to easily wear and take off
- Reflective RB logo for better visibility for night runs

Sustainability:
This product is made from at least 75% recycled polyester fibres.

TECHNOLOGY

SPECIFICATIONS

• Sports Category: RUNNING
• Gender: MEN
• Material:
• Knit or Woven: Combination
• Country of Origin: Vietnam
• Style code: J2GBD504

SHIPPING AND RETURNS

• Free delivery over $100.
• You will receive your order in 2-5 working days after payment completion.