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Bose

Bose 878857-0200 QuietComfort Earbuds II Sizing Kit

★★★★★4.8 (6 reviews)

Get the perfect seal for your QuietComfort Earbuds II with extra-small and extra-large ear tips and stability bands.

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Overview

The Bose Alternate Sizing Kit for QuietComfort Earbuds II exists to address one of the most common complaints with in-ear headphones: fit. A proper seal is essential not only for comfort but also for the noise cancellation performance that the QuietComfort Earbuds II are known for. This kit supplies two pairs of ear tips and two pairs of stability bands in extra-small and extra-large sizes, extending beyond the range that ships in the box with the earbuds themselves.

Each piece is crafted from Bose's soft silicone, matching the quality and feel of the factory-included components. Swapping them is a quick, tool-free process—simply pull off the existing tip or band and press the replacement into place. For users who found the standard sizing options just slightly off, this kit can make the difference between earbuds that shift during activity and earbuds that stay locked in place with a reliable acoustic seal throughout the day.

Key Features

SUPERIOR COMFORT - Crafted from ultra-soft silicone, these ear tips and stability bands ensure a snug, comfortable fit, even during extended use, enhancing your listening experience.

ENHANCED STABILITY - Includes two pairs of stability bands in X-Small and X-Large sizes, providing a secure and stable fit, perfect for workouts and active lifestyles.

OPTIMAL NOISE CANCELLATION - Achieve the best possible noise isolation with the correct ear tip size, maximizing the effectiveness of your QuietComfort Earbuds II technology.

CUSTOMIZED FIT - This kit contains X-Small and X-Large ear tips, allowing you to fine-tune the fit of your earbuds for unparalleled comfort and sound quality.

INCREASED DURABILITY - Made with high-quality silicone, these replacement ear tips and stability bands are designed to withstand daily wear and tear, ensuring long-lasting use.

Specifications

Brand
Bose
Model
878857-0200
Compatibility
Bose QuietComfort Earbuds II
Ear Tips Included
2 pairs (X-Small and X-Large)
Stability Bands Included
2 pairs (X-Small and X-Large)
Material
Soft silicone
Design
Compact and lightweight

Pros & Cons

👍 Pros

  • Provides extra-small and extra-large sizes not typically included with the earbuds
  • Soft silicone material remains comfortable during extended listening sessions
  • Includes both ear tips and stability bands for a complete fit adjustment
  • Simple swap installation with no tools required

👎 Cons

  • Only includes extra-small and extra-large sizes, not the full range
  • Only compatible with QuietComfort Earbuds II, not other Bose models
  • Does not improve audio quality on its own—only addresses fit and seal
  • Relatively high cost for silicone replacement tips and bands

Frequently Asked Questions

This kit is designed exclusively for the Bose QuietComfort Earbuds II. It is not compatible with other Bose earbud models.
The kit includes two pairs of ear tips (extra-small and extra-large) and two pairs of stability bands (extra-small and extra-large), covering the sizing extremes not included with the earbuds by default.
Both the ear tips and stability bands are made from soft silicone, designed for comfortable all-day wear.
The QuietComfort Earbuds II ship with a limited range of sizes. If the included tips or bands don't provide a secure, comfortable seal, this kit offers the extra-small and extra-large alternatives to achieve a proper fit.

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