Floors and footwear are persistent contamination sources. Even when a room is well-designed, particle transfer can occur at the gowning boundary and during routine walking. Overboots are used to reduce that transfer—especially in low-particle environments—by placing a controlled, low-shedding barrier between the wearer’s shoes and the cleanroom floor. BDOB-L is positioned by the manufacturer for controlled and critical environments where low lint, stable fit, and consistent donning help protect product and process integrity.

• Footwear barrier control when entering and working in ISO-classified cleanrooms and clean zones.
• Low-lint garmenting programs for pharma/biotech, medical device, lab, and manufacturing clean areas.
• Lower-leg interface coverage where standard shoe covers do not provide enough height or stability.
• Workflows where top-and-ankle tie control reduces slippage and “pumping” during walking (a common particle release driver).

• Longer coverage: 500 mm height helps reduce exposed lower-leg interface risk.
• Low shedding basis: manufacturer publishes Helmke Drum particle shedding results and positions CleanTough™ as low-linting.
• Fit stability: tie-fastenings at top and ankle help prevent slippage and reduce “pumping.”
• Slip-resistant sole: supports safer movement in controlled areas.
• Documentation support: PDS / DoC / IFU and material TDS are available for qualification review.

BDOB-L is constructed from CleanTough™ material, described as a polyethylene / polypropylene laminate. The overboots are described as antistatic / static dissipative and low-linting, with bound seams and single needle stitching.

Functional design features include a slip-resistant sole and tie-fastenings at the top and ankle. The intent is practical: maintain coverage and reduce movement-driven contamination release during walking and direction changes.

The table below consolidates attributes that typically matter for receiving, qualification, and gowning SOP alignment. If your program requires sterile footwear for critical zones, use the sterile variant (S-BDOB-L) or your approved sterile approach.

Attribute	BDOB-L (Published)
Part number / size	BDOB-L / Universal
Height	500 mm
Cleanroom class	Class 10 / ISO 4
Material	CleanTough™ (PE/PP laminate)
Construction	Bound seams with single needle stitching
Closures	Tie-fastenings at top & ankle (integral ties)
Sole	Slip-resistant; PE/PP
Particle shedding	Helmke Drum ≥0.5 µm: <2000 counts/min
Sterility	Non-sterile
Packaging	30/inner bag; 5 outer bags/carton = 150/case
Country of origin	China
Shelf life	5 years from date of manufacture

For overboots, the most meaningful “performance” considerations are typically: particle shedding behavior, fit stability during walking, and ESD / antistatic suitability (when static control is required). The manufacturer publishes particle shedding data (Helmke Drum) and notes static dissipative behavior for the CleanTough™ material.

Characteristic	What it means for use	Published basis
Particle shedding	Supports garment qualification in low-particle environments; helps compare garment options for footwear control.	Helmke Drum ≥0.5 µm: <2000 counts/min
Static dissipative behavior	Relevant where ESD controls are required; verify grounding requirements and facility policy.	Material described as static dissipative (charge decay time stated in manufacturer documentation)
Fit stability	Top & ankle ties reduce slippage; less movement reduces particle release and floor contact variability.	Tie-fastenings at top & ankle; longer length (500 mm)
Slip resistance	Supports safer walking; reduces sudden slip corrections that can disturb garments and airflow.	Slip-resistant sole (manufacturer description)

BDOB-L is packaged to support controlled handling: 30 pieces per sealed inner PE bag; one inner bag per sealed outer PE bag; five outer bags per lined carton (150 pieces). Shelf life is published as five (5) years from date of manufacture. If your program uses expiry-based garment control, build the shelf-life rule into receiving and stocking.

Compliance documentation is available via the linked Declaration of Conformity (EU PPE Regulation context) and Instructions for Use (general Type 5/6 garment guidance). Treat these documents as inputs to your facility’s qualification package—along with your internal gowning SOP, training, and monitoring program.

Key takeaway: the garment only performs as well as the donning discipline behind it. Overboots reduce transfer risk when the boundary is respected, ties are secured consistently, and removal is controlled to avoid re-aerosolizing contamination.

• Boundary crossing without protection: use a step-over bench and don on the clean side.
• Loose ankle fit (slippage): tie the ankle intentionally; re-check after initial walking.
• Dragging folds: pull to full height and smooth the material to avoid floor contact.
• Touching the sole: treat the sole as “dirty” even in clean areas; avoid hand contact.
• Fast doffing that aerosolizes particles: remove slowly; turn inside out to trap contamination.

For most programs, the closest “alternative” decision is not brand—it is sterile vs. non-sterile, plus height and closure stability. Compare: ISO class basis, shedding data availability, closure design, and documentation pack depth.

• Sterile variant: Ansell S-BDOB-L (when sterile footwear is required).
• Integrated boot option: consider coveralls with integrated boots when you need fewer interfaces to manage (site SOP dependent).
• Other sterile footwear programs: compare sterile packaging, sterility method, and certificate availability against your audit and aseptic requirements.

BDOB-L is typically selected for ISO-classified cleanrooms where footwear control is required and where non-sterile garments are acceptable under the site’s contamination control strategy. It is especially relevant when longer coverage and stable closures are needed to reduce slippage and particle transfer. If your process is Annex 1–driven for aseptic manufacture, confirm whether sterile footwear is required and select accordingly.