ACG RADICAL AIRFLOW NXT MEN'S DRI-FIT LONG-SLEEVE TRAIL RUNNING TOP
REVOLUTIONARY INNOVATION FOR ATHLETES IN MOTION.
Radical AirFlow is a wildly ambitious fabric centered on cranking up the A/C. Built to maximize the Radical AirFlow innovation, the long-sleeve, race-ready top is designed to allow more air to flow directly to your skin as you push pace. Worn and tested by elite ACG Trail Running athletes, Radical AirFlow produced peak results. Your turn to feel the chill.
Nike Dri-FIT technology moves sweat away from your skin for quicker evaporation, helping you stay dry and comfortable.
Ultra-breathable, open-hole knit feels soft and smooth on your body.
Fold-over elastic trim helps hold the top in place while you move.
Radical AirFlow features a wildly breathable, open-hole construction to help channel more airflow directly to your skin for rapid sweat evaporation while you move. Engineered air ducts are designed to accelerate airflow to help maximize your body's natural cooling mechanisms.
The soft, open-hole knit fabric throughout the garment features engineered air ducts in high-heat, high-chafe zones, designed to help you stay cool and comfy for all the miles ahead.
As one of the largest field test initiatives in Nike Running history, members of the All Conditions Racing Department (ACRD) tested the prototype throughout the 2025 elite season. Nike designers tracked feedback from in-race and lab testing to refine the garment. Elite trail runner and ACRD athlete, Caleb Olson wore his prototype en route to winning a grueling 2025 100-mile endurance run, clocking the second-fastest course time in the race's history.
More Details
- ACG branding on chest
- All Condition Racing Department (ACRD) branding on back
- 100% polyester
- Machine wash
- Imported
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STORE LOCATIONS
FIND YOUR SIZE
NIKE
FOOTWEAR
| US - MEN'S | US - WOMEN'S | US - KIDS | UK | CM | EU |
| 3.5 | 5 | 3.5Y | 3 | 22.5 | 35.5 |
| 4 | 5.5 | 4Y | 3.5 | 23 | 36 |
| 4.5 | 6 | 4.5Y | 4 | 23.5 | 36.5 |
| 5 | 6.5 | 5Y | 4.5 | 23.5 | 37.5 |
| 5.5 | 7 | 5.5Y | 5 | 24 | 38 |
| 6 | 7.5 | 6Y | 5.5 | 24 | 38.5 |
| 7 | 8.5 | 7Y | 6 | 25 | 40 |
| 7.5 | 9 | 7.5Y | 6.5 | 25.5 | 40.5 |
| 8 | 9.5 | 8Y | 7 | 26 | 41 |
| 8.5 | 10 | 8.5Y | 7.5 | 26.5 | 42 |
| 9 | 10.5 | 9Y | 8 | 27 | 42.5 |
| 9.5 | 11 | 9.5Y | 8.5 | 27.5 | 43 |
| 10 | 11.5 | 10Y | 9 | 28 | 44 |
| 10.5 | 12 | 10.5Y | 9.5 | 28.5 | 44.5 |
| 11 | 12.5 | 10 | 29 | 45 | |
| 11.5 | 13 | 10.5 | 29.5 | 45.5 | |
| 12 | 13.5 | 11 | 46 | ||
| 12.5 | 14 | 11.5 | 30.5 | 47 | |
| 13 | 14 | 11.5 | 30.5 | 47 | |
| 13.5 | 15 | 12.5 | 31.5 | 48 | |
| 14 | 15.5 | 13 | 32 | 48.5 | |
| 14.5 | 16 | 13.5 | 32.5 | 49 | |
| 15 | 16.5 | 14 | 33 | 49.5 | |
| 15.5 | 17 | 14.5 | 33.5 | 50 | |
| 16 | 17.5 | 15 | 34 | 50.5 | |
| 16.5 | 18 | 15.5 | 34.5 | 51 | |
| 17 | 18.5 | 16 | 35 | 51.5 | |
| 17.5 | 19 | 16.5 | 35.5 | 52 | |
| 18 | 19.5 | 17 | 36 | 52.5 | |
| 18.5 | 20 | 17.5 | 36.5 | 53 | |
| 19 | 20.5 | 18 | 37 | 53.5 | |
| 19.5 | 21 | 18.5 | 37.5 | 54 | |
| 20 | 21.5 | 19 | 38 | 54.5 | |
| 20.5 | 22 | 19.5 | 38.5 | 55 | |
| 21 | 22.5 | 20 | 39 | 55.5 | |
| 21.5 | 23 | 20.5 | 39.5 | 56 | |
| 22 | 23.5 | 21 | 40 | 56.5 | |
| 11 | 12.5 | 10 | 29 | 45 |
MEN'S APPAREL
The measurements on the size chart are body measurements.
FIT TIPS
If you're on the borderline between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit.
HOW TO MEASURE
BUST: Measure around the fullest part of your bust, keeping the measuring tape horizontal.
WAIST: Measure around the narrowest part (typically where your body bends side to side), keeping the tape horizontal.
HIPS: Measure around the fullest part of your hips, keeping the tape horizontal.
MEN'S TOPS
| SIZE | CHEST(IN) | WAIST(IN) | HIP(IN) | HEIGHT(IN) |
| XS | 35.2-35 | 26.29 | 32.5-35 | 5'7"-6'0" |
| XS | 35-37.5 | 29-32 | 35-37.5 | 5'7"-6'0" |
| M | 37.5,41 | 32-35 | 37.5-41 | 5'7"-6'0" |
| L | 41-44 | 35-38 | 41-44 | 5'7"-6'0" |
| XL | 44-48.5 | 38-43 | 44-47 | 5'7" |
| 2XL | 48.5-53.5 | 43-47.5 | 47-50.5 | 5'7"-6'0" |
| 3XL | 53.5-58 | 47.5-52.5 | 50.5-53.5 | 5'7"-6'0" |
| 4XL | 58-63 | 52.5-57 | 53.5-58.5 | 5'7"-6'0" |
MEN'S BOTTOMS
| SIZE | WAIST(IN) | HIP(IN) | LEG LENGTH(IN) | HEIGHT(IN) |
| XS | <29 | <35 | <32.25 | 5'7"-6'0" |
| S | 29-32 | 35-37.5 | 32.25 | 5'7"-6'0" |
| M | 32-35 | 37.5-41 | 32.5 | 5'7"-6'0" |
| L | 35-38 | 41-44 | 32.75 | 5'7"-6'0" |
| XL | 38-43 | 44-47 | 33 | 5'7" |
| 2XL | 43-47.5 | 47-50.5 | 33.25 | 5'7"-6'0" |
| 3XL | 47.5-52.5 | 50.5-53.5 | 33.5 | 5'7"-6'0" |
| 4XL | 52.5 | 53.5-58.5 | 33.75 | 5'7"-6'0" |
WOMEN'S APPAREL
The measurements on the size chart are body measurements.
FIT TIPS
If you're on the borderline between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit.
HOW TO MEASURE
BUST: Measure around the fullest part of your bust, keeping the measuring tape horizontal.
WAIST: Measure around the narrowest part (typically where your body bends side to side), keeping the tape horizontal.
HIPS: Measure around the fullest part of your hips, keeping the tape horizontal.
WOMEN'S TOPS
| SIZE | BUST(IN) | WAIST(IN) | HIP(IN) |
| XXS | 27.5-29.5 | 21.5-23.5 | 30.5-33 |
| XS | 29.5-32.5 | 23.5-26 | 33-35.5 |
| S | 32.5-35.5 | 26-29 | 35.5-38.5 |
| M | 35.5-38 | 29-31.5 | 38.5-41 |
| L | 38-41 | 31.5-34.5 | 41-44 |
| XL | 41-44.5 | 34.5-38.5 | 44-47 |
| 2XL | 44.5-48.5 | 38.5-42.5 | 47-50 |
| 1X | 45-49 | 41-45 | 46-50 |
| 2X | 49-53 | 45-49 | 50-54 |
| 3X | 53-57 | 49-53 | 54-58 |
WOMEN'S BOTTOMS
| SIZE | WAIST(IN) | HIP(IN) | HEIGHT |
| XXS | 21.5-23.5 | 30.5-33 | 5'4"-5'8" |
| XS | 23.5-26 | 33-35.5 | 5'4"-5'8" |
| S | 26-29 | 35.5-38.5 | 5'4"-5'8" |
| M | 29-31.5 | 38.5-41 | 5'4"-5'8" |
| L | 31.5-34-5 | 41-44 | 5'4"-5'8" |
| XL | 34.5-38.5 | 44-47 | 5'4"-5'8" |
| 2XL | 38.5-42.5 | 47-50 | 5'4"-5'8" |
| 1XL | 41-45 | 46-50 | 5'4"-5'8" |
| 2X | 45-49 | 50-54 | 5'4"-5'8" |
| 3X | 49-53 | 54-58 | 5'4"-5'8" |
SPORTS BRAS
| BAND/CUP SIZE | ALPHA SIZE |
ALPHA/CUP SIZE
|
| 30A-30C | XS | XS(AC) |
| 30D-30E | XS | |
| 32A-32B | XS | XS(A-C) |
| 32C | S | S(A-C) |
| 32D-32E | S | S(D-E) |
| 34A-34C | S | S(A-C) |
| 34D-34E | M | M(D-E) |
| 36A-36C | M | M(D-E) |
| 36D-36E | L | L(D-E) |
| 38A-38C | L | L(A-C) |
| 38D-38E | XL | XL(D-E) |
| 40A-40C | XL | XL(A-C) |
| 40D-40E | 2XL | XL(D-E) |
| 42A-42C | 1X | |
| 42D-42E | 2X | |
| 44A-44C | 2X | |
| 44D-44E | 3X |
KIDS APPAREL
The measurements on the size chart are body measurements.
FIT TIPS
If you're on the borderline between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit.
HOW TO MEASURE
BUST: Measure around the fullest part of your bust, keeping the measuring tape horizontal.
WAIST: Measure around the narrowest part (typically where your body bends side to side), keeping the tape horizontal.
HIPS: Measure around the fullest part of your hips, keeping the tape horizontal.
| SIZE | NUMERIC SIZE | AGE | HEIGHT(IN) | CHEST(IN) | WAIST(IN) |
| XS | 6-7 | 7-8 | 48-50 | 25.5-26 | 23.5-24 |
| S | 8-9 | 8-10 | 50-54 | 26-27 | 24-25.5 |
| S+ | 8-9 Plus | 8-10 | 50-54 | 28-30 | 26-28 |
| M | 10-12 | 10-12 | 54-58 | 27-29.5 | 25.5-27 |
| M+ | 10-12 Plus | 10-12 | 54-58 | 30-33 | 28-30 |
| L | 14-16 | 12-13 | 58-62 | 29.5-32 | 27-28.5 |
| L+ | 14-46 Plus | 12-13 | 58-62 | 33-36 | 30-32 |
| XL | 18-20 | 13-15 | 62-67 | 32-35 | 28-5-29.5 |
| XL+ | 18-20 Plus | 13-15 | 62-67 | 36-38.5 | 32-34.5 |
| SIZE | NUMERIC SIZE | AGE | HEIGHT(IN) | CHEST(IN) | WAIST(IN) |
| XS | 6-7 | 7-8 | 48-50 | 25.5-27 | 23.5-24 |
| S | 8-9 | 8-10 | 50-54 | 27-29 | 24-25 |
| S+ | 8-9 Plus | 8-10 | 50-54 | 29-32 | 26.5-29.5 |
| M | 10-12 | 10-12 | 54-57 | 29-31 | 25-27 |
| M+ | 10-12 Plus | 10-12 | 54-57.5 | 32-34.5 | 29.5-32 |
| L | 14-16 | 12-13 | 57-61 | 31-33.5 | 27-28 |
| L+ | 14-46 Plus | 12-13 | 57.5-61.5 | 34.5-38 | 32-35 |
| XL | 18-20 | 13-15 | 61-65 | 33.5-36.5 | 28-29.5 |
| XL+ | 18-20 Plus | 13-15 | 61.5-65.5 | 38-41.5 | 35-39 |
LITTLE KIDS' CLOTHING
| SIZE | NUMERIC SIZE | AGE | HEIGHT(IN) | CHEST(IN) | WAIST(IN) |
| XS | 4 | 3-4 | 38.5-41 | 22-23 | 21.5-22 |
| S | 5 | 4-5 | 41-43 | 23-24 | 22-22.5 |
| M | 6 | 5-6 | 43-46 | 24-24.75 | 22.5-23 |
| L | 6X/7 | 6-7 | 46-48 | 24.5-26 | 23-24 |
| XL | 7X | 7-8 | 48-50.5 | 26-27 | 24-25 |
EQUIPMENT
The measurements on the size chart are body measurements.
FIT TIPS
* If you're on the borderline between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit.
* OS = One Size.
HOW TO MEASURE
Measure the circumference of your head using a measuring tape. Wrap it around your head at the point where the hat will sit (about an inch/2.5cm above your eyebrows).
| SIZE | US - MEN'S | US - WOMEN'S | US KIDS | UK | EU |
| XS | 13C-3Y | 31-35 | |||
| S | 4-6 | 3Y-5Y | 2-5 | 34-38 | |
| M | 6-8 | 6-10 | 5Y-7Y | 5-8 | 38-42 |
| L | 8-12 | 10-13 | 8-11 | 42-46 | |
| XL | 12-15 | 11-14.5 | 46-50 |
HATS AND HEADWEAR
| Nike Hat Size | Head Size | Alpha Size | Swosh Flex | Unisex | Women's | Dual Size Unisex | Women's |
| 6 1/2 | 20 1/2 | XS | S | ||||
| 6 5/8 | 20 7/8 | XS/S | XS | S OS | S/M | ||
| 6 3/4 | 21 1/8 | XS | XS/S | XS S OS | S OS | S/M | |
| 6 7/8 | 21 1/2 | XS/S S/M | XS S OS | S OS | XS/S | ||
| 7 | 21 7/8 | S | XS/S S/M | XS S OS | S OS | M/L | |
| 7 1/8 | 22 1/4 | S/M M/L OS | XS S OS | S OS | S/M | ||
| 7 1/4 | 22 5/8 | M | S/M M/L OS | S OS | OS L | L/XL | |
| 7 3/8 | 23 | M/L L/XL OS | S OS XL | OS L | M/L | ||
| 7 1/2 | 23 1/2 | L | M/L L/XL OS | OS XL | L | ||
| 7 5/8 | 23 7/8 | L/XL XL/XXL | OS XL | L | |||
| 7 3/4 | 24 1/4 | XL | L/XL XL/XXL | XL | L | ||
| 7 7/8 | 24 5/8 | XL | L | XL/XXL | |||
| 8 | 25+ | XL |