This four-wall UltaMid 4 Insert features “no-see-um” mesh and a Dyneema® Composite Fabrics floor for adventurers who want to keep the bugs at bay and gear dry. Built to fit into the UltaMid 4, the 100% waterproof DCF11 bathtub-style base ensures excellent protection in inclement weather. The insert is marginally smaller than the perimeter of the UltaMid, so it never touches the walls and keeps condensation to a minimum.


  • 1.76 lbs | 28.2 oz | 799g


  • Top, center-pole cone reinforced with Hardline with Dyneema®
  • Adjustable shock cord with glove hooks attach corners to shelter
  • Vertical two-way zipper running from floor to shelter door with two horizontal zippers running the width of the floor allows for easy exit and entry
  • Comes with an X-Large Drawstring Stuff Sack for storage
  • Sewn-in guyline for tying back door panels
  • DCF11 Dyneema® Composite Fabrics (formerly Cuben Fiber) bathtub floor
  • Center of floor reinforced with DCH150 patch for pole contact point
  • Carabiner included for hanging without center pole support


  • Width: 101" | 256.5cm
  • Length: 101" | 256.5cm
  • Height: 75" | 190.5cm


SKU 383539
Barcode # 653341150325