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Holster Comparisons, Holster Wedge

Cloudster Pillow + T.Rex Arms Sidecar 2.0: Compatibility & Setup

Posted on by cloudster
Best holster wedges 2026 comparison - Cloudster Pillow holster wedge

If you carry a T.Rex Arms Sidecar 2.0 — the holster that defined the modern AIWB sidecar concept — you already own one of the most engineered Kydex setups on the planet. What T.Rex doesn’t always include in the box is a comfort wedge. Most Sidecar 2.0 customers add a wedge separately, and the Cloudster Pillow is the most-recommended pairing among AIWB carriers running this rig.

Does the Cloudster Pillow Fit T.Rex Arms Holsters?

Yes — every T.Rex Arms IWB and AIWB Kydex holster. The Sidecar 2.0 (compact, light-bearing, and full-size variants), the Ragnarok, and the Raptor all have the flat-back Kydex panel the Cloudster Pillow’s hook-and-loop attachment is designed for. The wedge mounts on the body-facing side of the holster, near the muzzle, and rotates the grip into your torso for printing reduction.

If your Sidecar 2.0 didn’t ship with a comfort wedge, the Cloudster Pillow includes industrial-grade adhesive loop strips to bond cleanly to the Kydex on first install.

Which Cloudster Pillow Size Works Best With a T.Rex Sidecar 2.0?

T.Rex Holster Recommended Size Why
Sidecar 2.0 — compact (G19, P365 XMacro, M&P Compact) Standard Best general fit for the Sidecar’s body-side panel + integrated mag carrier.
Sidecar 2.0 — light-bearing (TLR-7, X300, Surefire) Deluxe Light pushes muzzle outboard — Deluxe fills the extra space below the bezel.
Sidecar 2.0 — red dot (Aimpoint Acro, Holosun, RMR) Standard or Deluxe Red dot adds height to the slide but doesn’t widen the holster — Standard usually works; Deluxe for full-size frames.
Sidecar 2.0 — full-size (G17, M&P Full, Staccato P) Deluxe or Monster Full-size pistol + sidecar mag carrier = the widest setup. Monster gives the best surface coverage for bigger body builds.
Ragnarok / Raptor (no mag carrier) Standard Slimmer profile — Standard sits cleanly without overhang.

Why T.Rex Arms Sidecar 2.0 Customers Use Cloudster Pillow

The Sidecar 2.0 is brilliant Kydex engineering. The platform itself is a comfort tradeoff:

  • The integrated mag carrier widens the body-side surface. A wider surface concentrating against your abdomen is more pressure to manage. The Cloudster Pillow’s adjustable shredded foam absorbs that pressure across a soft fabric layer instead of bare Kydex.
  • Premium Kydex is unforgiving on hot days. The Sidecar’s clean Kydex finish gets sticky and abrasive as you sweat. Cloudster’s bamboo (White) or cotton (Dark / Camo) cover sits between holster and skin all summer.
  • The muzzle dig with light-bearing setups. A G19 with a TLR-7 in a Sidecar 2.0 has a wider muzzle profile that pushes Kydex into your lower abdomen sitting and driving. The wedge below the bezel solves this.
  • AIWB sidecar setups need the grip rotated more than other holsters. Because of the mag carrier’s added body-side mass, the grip naturally wants to rotate outboard. A wedge at the muzzle end pushes it back inward — exactly what reduces print on the Sidecar 2.0.

How to Install the Cloudster Pillow on a T.Rex Sidecar 2.0

  1. Clean the body-side Kydex. Wipe with rubbing alcohol so the loop strip bonds cleanly.
  2. Apply the loop strip. Stick it to the lower third of the body-side panel, centered between the holster and the mag carrier — not just on the holster side.
  3. Press the Cloudster Pillow on. Position with the thickest part nearest the muzzle. On a Sidecar 2.0, the wedge should span both the holster and the mag carrier so they ride evenly.
  4. Holster up and check rotation. The grip should now angle into your body more aggressively than it did without the wedge.
  5. Test with movement. Walk, sit, drive, lean over. Pay attention to where pressure builds — that’s your tuning target.
  6. Adjust fill. Sidecar 2.0 carriers typically run more fill than IWB-only carriers because the platform is wider. Add fill until printing is gone, then back off slightly for comfort.

What T.Rex Arms Customers Are Saying

“This paired with a Trex Sidecar 2.0 and suspenders finally made AIWB doable for me. I’ve struggled with appendix for years, trying it here and there to see if I can make it work. I haven’t been able to make it work until now.”
— Simon F. — West Valley City, UT

“Glock 19 with Aimpoint Acro in the T.Rex Arms Sidecar 2.0. Most comfortable wedge around. Kicks the crap out of any of the competition. Has made the holster actually comfortable for everyday life.”
— Holden Z. — Bemidji, MN

“I have been carrying the original bamboo mid-size for months now and that has worked well. I will say I was longing for a bigger pillow so I was excited when the Deluxe size was released.”
— Eric C. — Auburn Hills, MI

Frequently Asked Questions

Will the Cloudster Pillow fit a T.Rex Sidecar 2.0 with a weapon light?

Yes. Position the wedge below the light bezel, never over the light. Deluxe size is the most common pairing for Sidecar 2.0 + TLR-7 / X300 / Surefire setups.

Does the Cloudster Pillow work with the T.Rex Sidecar 2.0 + red dot combination?

Yes. Red dots (Aimpoint Acro, Holosun, RMR) add height to the slide but don’t change the holster’s body-side dimensions. Standard size is the right pick for compact frames; Deluxe for full-size frames with a red dot.

Should the wedge sit only on the holster side of the Sidecar, or span over the mag carrier too?

Span over both. The mag carrier adds body-side mass that benefits from wedge support — if your wedge only covers the holster half of the Sidecar, the mag carrier side will still dig. The Standard, Deluxe, or Monster sizes are wide enough to cover the entire body-facing surface.

Will the Cloudster Pillow shift on a Sidecar 2.0 during a draw?

No. The industrial-grade hook-and-loop stays bonded under the dynamic load of a draw stroke. The wedge itself stays attached because it’s a mechanical Velcro connection, not adhesive.

Can I use a Cloudster Pillow with the older T.Rex Sidecar (original, not 2.0)?

Yes. Any T.Rex Arms IWB or AIWB holster with flat-back Kydex works. The original Sidecar is fully compatible.

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