APTUM™ Retro-Kit Cummerbund Tubes Skeletal

Skeletal Modular Cummerbund with FirstSpear® TUBES™ Rapid-Release Integration

The APTUM™ Retro-Kit Cummerbund Tubes Skeletal is a premium modular cummerbund upgrade designed for retrofitting plate carrier systems with lightweight skeletal structure and rapid-release capability. Engineered for high-performance load carriage and mobility, it combines elastic construction with laser-cut GRID architecture for maximum adaptability in mission-driven environments.

This configuration integrates authentic FirstSpear® TUBES™ Buckle technology, enabling fast, intuitive donning and doffing while maintaining a secure, low-profile fit under dynamic movement. The skeletal design supports pouch mounting on both sides, allowing users to configure mission-specific loadouts without sacrificing comfort or stability.

A hook-and-loop adjustable flap system paired with Tubes buckle assembly ensures secure integration with compatible carriers, while laser-cut attachment points expand modularity for additional accessories. As part of the APTUM™ ecosystem, this cummerbund is designed for professional users requiring speed, scalability, and reliability.

Features

• Skeletal elastic cummerbund design for lightweight performance
• Integrated FirstSpear® TUBES™ Buckle system for rapid release
• Supports pouch attachment on both interior and exterior sides
• Hook-and-loop adjustable flap with Tubes buckle assembly
• Laser-cut GRID attachment points for modular expansion
• Designed for retrofit compatibility with existing plate carriers
• Sold as a pair
• Optimized for scalable and mission-configurable loadouts
• Only available to customers in the United States

Sizing

• Small: 17" total length per side (6 columns)
• Medium: 21" total length per side (8 columns)

Sizing Guidance:
Measure from the bottom of your front plate to the center back of your carrier. Subtract 2" for buckle allowance.

⚠️ Measure carefully—twice or even three times. Cut once.
We do not exchange or modify orders due to incorrect size selection. If unsure, contact us before purchasing.

Materials & Construction

• Durable laser-cut GRID laminate construction
• MIL-SPEC elastic, thread, and hook-and-loop materials
• Integrated FirstSpear® TUBES™ hardware
• Berry Compliant
• Made in the USA

Ideal For

• Military and law enforcement operations
• High-mobility tactical loadouts
• Plate carrier retrofitting and upgrades
• Rapid-response environments
• Modular armor systems
• Professional duty use

FirstSpear® TUBES™ is a registered trademark of FirstSpear, LLC. Products shown with these trademarks utilize FirstSpear technology™ components.