the envelopes are great. easy to seal. good “stickability”.
the major issue is nothing to do with the envelopes. it is to do with the delivery company. maybe i was just unlucky, but they “attempted delivery” twice while I was in my house but never once did the doorbell ring or a “we missed you” card appear through my door. so instead of taking 2 days to receive the envelopes, it took 5. not great service for £5.50 postage cost