1, Size: 29cm/11.42 x 26cm/10.24 (Approx.)40cm/15.75 x 30cm/11.81 (Approx.)50cm/19.69 x 40cm/15.75 (Approx.)60cm/23.62 x vs Fiskars Silicone Craft Mat: which is safer?
Fiskars Silicone Craft Mat is our pick: better on PFAS and on the overall hazard picture.
Pyrex
1, Size: 29cm/11.42 x 26cm/10.24 (Approx.)40cm/15.75 x 30cm/11.81 (Approx.)50cm/19.69 x 40cm/15.75 (Approx.)60cm/23.62 x
PFAS grade
B 80/100
Overall grade
D 66/100
Verdict
Buy
Hazard flags
⚑ 2
Material
borosilicate glass
Confidence
88%
ReportedThermal shock fracture and cutting hazard
PossibleLid or handle coating hazards
Our pick
Teflon
Fiskars Silicone Craft Mat
PFAS grade
B 80/100
Overall grade
C 72/100
Verdict
Buy
Hazard flags
⚑ 2
Material
silicone craft mat (silicone-based, not cookware)
Confidence
78%
PossibleSilicone leachables (uncrosslinked oligomers)
PossibleCoating degradation and microparticles
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More silicone cutting mats & prep boards: see the full ranking