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4.0 Men's Beast Performance Half Zip

$75.00 W9315-010S
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If you are looking for ultra-warmth, the Beast is for you! This half-zip top has a smooth face on the outside of the top for easy layering and brushed ultra-high pile sherpa fleece on the inside to trap air. Throw a waterproof shell over it and use it as a great layering piece or wear on its own as a standalone outer layer. Works great with the Beast Pant.


  • Thermoregulation Technology keep you warm and dry
  • Heavy-duty Sherpa inside for maximum warmth
  • UPF Rating 50+
  • All flat seam construction and rib gusset to prevent chafing
  • Zippered gadget pocket to keep items from moving around


  • Climasense fiber fusion is designed to regulate your optimal temperature
  • Thermoregulation technology provides comfort through a wide range of temperatures
  • UPF rated for sun protection
  • Odor Control neutralizes sweat and odor
  • Moisture Management moves moisture from the skin to keep you warm and dry


  • Body: 100% Polyester
  • Rib: 90% Polyester, 10% Spandex

Customer Reviews

Based on 12 reviews
Jacques Kik

Very warm, quick delivery.

Charles D Donham

4.0 Men's Beast Performance Half Zip

TOO WARM YET,,,, in the North East to wear it but the quality seems true to form as I have been utilizing your products (glove liners/hats) since 2013. Original purchases were through Scamazon. I'm a robust 68 year young veteran and my hands can withstand HOURS of severe ( think < zero degrees ) weather when used with a quality outer glove ! I expect nothing different with the 4.0 shirt. BTW ....from my placing the order to delivery was just UNDER 96 hours !!!! YOU CATS ROCKED THAT ORDER !!!! And it was through USPS....go figure ??? Keep up the good work, not entirely thrilled about manufacture in China ( the government not the people ! ) but the quality is evident. I'LL BE BACK !!! lol Thanks Again :)

Mark Francis

Love it , I'm in woods daily with 3 large dogs snow, mud , etc for hours at a time I'm good and I worked outside all my life helps in preparation

james maxwell
High Quality

Properly described, great fit