Outlast® Phase-Change Long Sleeve

Outlast® Phase-Change Long Sleeve

Regular price $38
Regular price $88 Sale price $38
Color: White
Fast Free Shipping
Free & Easy Returns

Revel in the fusion of ASRV's sophisticated aesthetic and NASA's temperature regulating technology with the ASRV x Outlast® Phase-Change Long Sleeve. This piece is meticulously crafted for high-intensity running, effortlessly adapting to varying weather conditions. The charm of this garment lies in its ability to maintain an optimal comfort zone tailored to your unique microclimate.

  • Lightweight
  • 4-way stretch fabric for unrestricted movement
  • NASA Outlast® technology for optimal temperature regulation
  • Silicone PCM capsules coating for added comfort
  • Versatile base layer design
  • Suitable for all-weather conditions, particularly spring and fall
Size & Fit

  • Fits true to size, take your normal size
  • If you are in between sizes, we recommend sizing up
  • Model is 6' height and wears size L
  • For accurate measurements, consult the brand’s size guide

    Size Guide

Material & Care

  • 91% polyester, 9% spandex
  • Silicone PCM capsule coating
  • Machine wash cold with like colors, inside out
  • Use clear detergent without synthetic dyes
  • Hang dry
  • Do not iron
  • Imported

Brand Info
ASRV Sportswear, founded by Jay Barton in 2014, redefines athletic apparel, embodying unwavering pursuit of excellence and the fusion of body and mind. The very essence of ASRV, signified by its acronym – All-Season Recreation Versatility – is etched into every fiber of the brand; rooted in high-performance sports, it infuses discipline, focus, and determination into every facet of life. The brand's design principles create the ultimate blend of performance, versatility, and durability for a demanding new generation. ASRV relentlessly explores new fabric frontiers, seamlessly integrating cutting-edge technology with timeless design, and setting industry benchmarks. The brand's products epitomize adaptability, featuring water-repellent, antibacterial, sweat-wicking properties, enabling peak performance in diverse conditions. ASRV's philosophy centers on continual evolution, where every challenge surmounted leads to the convergence of purpose and passion.


Free U.S. shipping

We offer free express shipping on all U.S. orders. Orders are shipped via all major carriers (UPS, DHL, FedEx, USPS) and should arrive within 3 to 5 business days.

Processing time

Most orders are shipped within 1-2 business day. Processing time is in addition to transit/delivery time. Once your order ships you will receive a confirmation email with your shipment and tracking details.


If you order multiple items, you may get multiple deliveries. We’ll send you a shipping confirmation email for each shipment along with shipping notifications throughout transit so you’ll know exactly what to expect and when to expect it.

P.O. Boxes and APO/FPO

At this time we do not ship to P.O. Boxes or APO/FPO addresses.

International shipping

At this time, we are not able to ship to countries outside the U.S.

Possible delays

We do our best to ensure the timely delivery of all orders. Please keep in mind that we are only provided with an estimated delivery date from our carriers and cannot guarantee delivery estimates.


Free 30-day returns on all U.S. orders

If you are not completely satisfied with your purchase or you simply wish to return it, you have 30-days from the day your order was delivered to send it back to us. Returns are complementary and hassle-free. All products must be returned in a new and unused state, in perfect condition, and with all original tags attached.


At this time we are unable to offer exchanges. If you’d like to exchange an item please return it for a refund or store credit and place a new order for your new item.

How to make a return?
  • Click here to start your return or simply log in to your account
  • Enter your order number, email or zip for identification and click “Get Started”
  • Select the items you want to return from your order and select the return reason
  • Select your return credit option: Refund or Store Credit and click “Complete”
  • Download our pre-paid Return Label and attach it to your package (remove or cover any previous shipping labels to avoid shipping delays)
  • Drop off your return at any USPS location. Make sure to keep your receipt
Final-Sale items

Items marked "Final Sale" cannot be returned once purchased.

Refund processing

Returns are processed within 3-5 business days after they arrive at our warehouse. Refunds will be credited to the original form of payment, and a confirmation email will be sent to you once it has been issued. It may take up to 7 additional days for the funds to show in your account.

Late or refused returns

Your item(s) should be sent back to us within 30 days of receiving you order. Returns outside this timeframe may be accepted at our discretion and may only be refunded as a store credit. We reserve the right not to accept returns if the product shows signs of wear or has been used or altered from its original condition in any way.


All shoes should be tried on a carpeted surface and returned in a new, unused condition with the original tags, shoe box, and packaging. Cleats should not be installed on cycling shoes. Returns without a shoe box, in a damaged shoe box, or with scratched soles will not be accepted and will be sent back.


Outlast® Phase-Change Long Sleeve

  • Fits true to size, take your normal size
  • If you are in between sizes, we recommend sizing up Slim
  • Model is 6' height and wears size L
  • For accurate measurements, consult the brand’s size guide

ASRV Outlast® Phase-Change Size Guide

Measurement (Inches) XS S M L XL
Chest 30" 31"
Length 23" 24"
25" 26"


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