Schools should only stipulate basic items and colours (but not styles) so that items can be bought from multiple retail suppliers at reasonable prices and not just from one authorised supplier
Efallai y bydd yn rhaid i gwmni gydymffurfio â safon dan rai amgylchiadau yn unig ac nid dan amgylchiadau eraill - gan ddibynnu ar beth sy’n rhesymol iddyn nhw.