Overspecs safety glasses designed to fit comfortably over prescription spectacles. Low-profile frame, flexible arms, moulded silicone temple lining, anti-scratch lens coating, and Grade F impact protection. One size fits all.
Slimfit Overspecs Safety Glasses in clear lens are designed specifically to be worn over prescription spectacles, giving glasses wearers proper eye protection without the faff of clip-ons or prescription safety glasses. These overspecs safety glasses sit low-profile over standard frames, so you get the protection you need without feeling like you’re wearing a welding helmet on your face.
The arms are built to flex rather than fight your head shape, which matters when you’re pulling them on and off throughout the day. Snap a brittle pair of overspecs on a cold morning and you’ll appreciate that detail. The moulded silicone lining along the temples adds grip and cushioning, keeping the glasses in place during extended wear rather than sliding down every five minutes.
Lens Performance on the Slimfit Overspecs Safety Glasses
The clear lenses carry Grade F impact resistance and are rated Optical Class 1, which is the better of the two optical quality grades available in EN166 eye protection. Optical Class 1 means the lens introduces minimal distortion, so your vision stays clear and accurate rather than slightly off, which is particularly relevant when you’re already wearing a corrective lens underneath. The lenses also include UV protection, which matters for outdoor site work, yard work, or any task near UV light sources.
An anti-scratch micro coating extends the working life of the lens. Clear polycarbonate without any scratch protection clouds over quickly on a building site, reducing visibility and making the glasses uncomfortable to wear. The coating helps the lens stay clearer for longer, which in turn means they actually get worn rather than sitting in a pocket.
Fit and Comfort for Long Shifts
The one-size-fits-all design works across a wide range of face shapes and spectacle frame sizes. The flexible arms adjust to the temples rather than clamping, and the soft rubber lining distributes pressure evenly. If you’ve ever ended up with sore temples after a few hours in rigid overspecs, the difference here is noticeable. These are genuinely suitable for prolonged wear, not just a quick job where you’d tolerate almost anything.
At this price point, it also makes sense to keep a supply on hand for visitors, subcontractors, or anyone on site who needs eye protection but hasn’t brought their own. The low-profile design means they sit closer to the face than traditional overspecs, which reduces fogging caused by airflow between the lens and the face, as well as making them a bit less ungainly to wear alongside other PPE.
Slimfit Overspecs Safety Glasses are a practical, no-nonsense solution for any workplace where prescription glasses wearers need compliant eye protection. Suitable for construction, manufacturing, engineering workshops, and general trade use where clear vision and reliable impact protection are both required.
Pro Tip: If your overspecs are fogging repeatedly, check whether the primary spectacles underneath have thick frames creating a seal that traps warm air; a very slight adjustment to the arm tension can create a small gap at the side that allows airflow without compromising protection.
Slimfit Overspecs Safety Glasses are used across construction, manufacturing, engineering, and general trade environments wherever workers wear prescription spectacles and need to comply with site eye protection requirements. They are suited to tasks including grinding, drilling, masonry work, carpentry, chemical handling, and general assembly work where flying debris or dust presents a risk to the eyes. Outdoor site use is also appropriate given the UV protection built into the lens.
Best For
Wearing over prescription spectacles
Construction and site work
Engineering and manufacturing
Chemical handling environments
Extended wear throughout a shift
Visitor and subcontractor PPE supply
Available In
Clear lens
Smoked lens
Key Features
Grade F impact-resistant lenses
Optical Class 1 lens quality
UV protection
Anti-scratch micro coating
Moulded silicone temple lining
Flexible arms
One size fits all
Low-profile overspec design
Not suitable for: Not suitable as a replacement for specialist splash goggles where full sealed eye protection is required. The clear lens version is not appropriate for use in bright sunlight or near intense light sources where tinted protection would be needed.
Put the Slimfit Overspecs over your existing prescription spectacles and adjust the flexible arms so the silicone lining sits comfortably against your temples. The glasses should sit flat against your face with no significant gap at the sides. Check that your vision is clear and unobstructed before starting work.
Inspect the lens before each use for deep scratches or cracks. Surface marks from the anti-scratch coating wearing down will eventually reduce optical clarity, at which point the glasses should be replaced. At this price, there is no good reason to persist with a lens that is compromising your vision.
Put on your prescription spectacles as normal before fitting the overspecs
Hold the Slimfit Overspecs by the arms and open them fully before placing over your spectacles
Position the lens centrally over your field of vision and settle the arms onto your temples
Check the silicone lining is seated comfortably against the temples with even pressure on both sides
Confirm there is no significant distortion or visual interference before starting the task
Inspect the lens after use for damage and clean with a soft cloth; store in a safe location to avoid scratching
Will these overspecs safety glasses fit over larger prescription frames?
The Slimfit design is intended to fit over most standard spectacle frames, and the flexible arms help accommodate different sizes. Very large or thick-framed prescription glasses may feel snug, but for the majority of standard frames these will fit without issue.
What impact protection standard do these glasses meet?
The lenses are rated Grade F for impact resistance under EN166, which covers low-energy impact protection suitable for most general trade and construction tasks. The Optical Class 1 rating means the lens introduces minimal distortion, which is important when wearing them over prescription lenses.
Can these be worn outdoors in sunlight?
The clear lens version includes UV protection, so the eyes are protected from UV radiation outdoors. However, the clear lens provides no tinting or glare reduction in bright sunlight. For outdoor work in strong sun, the smoked lens version would be the more comfortable choice.
Slimfit Overspecs Safety Glasses feature polycarbonate lenses with an anti-scratch micro coating and UV protection. The lens specification meets EN166 Grade F impact resistance and Optical Class 1 quality standards. The frame uses flexible arm construction with moulded silicone comfort lining at the temples. Lens material and construction are suited to general industrial and construction environments.
Lens Colour
Clear
Impact Rating
Grade F
Optical Class
1
UV Protection
Yes
Lens Coating
Anti-scratch micro coating
Frame
Flexible arms with silicone temple lining
Fit
One size fits all
Design
Overspec (fits over prescription glasses)
Box Quantity
1
Size
Clear, Smoked
Box Quantity
1
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