Quick Answer

Attach the Flex Drum Softbox to your 1x2 or 1x3 Flex mat using the built-in mounting strap, then unfold the collapsible frame and adjust the black blocks to control light spill.

What Makes the Flex Drum Softbox Different

This modifier is designed specifically for Westcott Flex 1x2 and 1x3 LED mats, not for traditional strobes or speedlights. Its quick-collapse frame and 1 1/4-stop diffusion fabric create soft, natural-looking light that simulates 360º interior lighting. The removable black blocks let you flag off light from specific directions, giving you control without extra grip gear.

Before You Start: What You'll Need

You need a Westcott Flex 1x2 or 1x3 LED mat (sold separately) and the Flex Drum Softbox. The softbox includes the collapsible frame, diffusion fabric, and black blocks. No tools are required, but a flat surface helps during setup.

Step-by-Step Setup Guide

  1. 1. Lay the Softbox Flat and Open the Frame: Place the collapsed Flex Drum Softbox on a clean, flat surface. Unfold the collapsible frame by pulling the top and bottom rings apart until the drum shape locks into place. You'll hear a soft click when the frame is fully open. Common mistake: forcing the frame. If it doesn't click easily, check that no fabric is pinched between the rings.
  2. 2. Attach the Diffusion Fabric: Drape the premium 1 1/4-stop diffusion fabric over the open frame. Secure it using the built-in Velcro strips along the edges. Make sure the fabric is taut and evenly stretched to avoid wrinkles that can create hot spots. Checkpoint: run your hand across the fabric. Any loose corners will cause uneven diffusion and may flutter during use.
  3. 3. Mount the Flex Mat Using the Strap: Lay your Flex 1x2 or 1x3 mat face-down on the back of the softbox. Thread the adjustable built-in mounting strap through the mat's mounting loops and tighten it evenly. The mat should sit flush against the softbox opening. Common mistake: overtightening the strap on one side. This tilts the mat and shifts the light beam. Tighten in a crisscross pattern.
  4. 4. Attach the Black Blocks (Optional): If you need to control light direction, attach the removable black blocks to the sides of the softbox using the provided Velcro. Each block covers a section of the diffusion fabric to block spill. You can use one, two, or all blocks depending on your desired beam shape. Checkpoint: blocks should overlap the fabric edge completely. Gaps will let light leak and defeat the purpose.
  5. 5. Power On and Test: Connect your Flex mat to power and turn it on. Check for even illumination across the entire diffusion surface. Adjust the mat's brightness or the block placement if you see any dark edges or uneven patches. Common mistake: assuming the mat is centered. If one side looks brighter, loosen the strap, center the mat, and retighten.

Product Highlight

  • Flex Drum Softbox for 1' x 2' and 1' x 3' Mats: Portable quick-collapse softbox evenly diffuses Flex 1x2 and 1x3 light with premium 1 1/4-stop diffusion fabric. You can set up and break down in seconds, and the fabric softens harsh LED edges for a more natural look straight out of the box.

    Flex Drum Softbox for 1' x 2' and 1' x 3' Mats

    Flex Drum Softbox for 1' x 2' and 1' x 3' Mats