When you first put on your shoes today, you experienced pressure on your foot and this was helpful for letting you know when your foot was securely in the shoe. Soon after, you probably stopped paying attention to this feeling, perhaps until reading this question. The fact that the sensation of your foot in the shoe faded with time is an example of (adaptation, range fractionization), which is a feature of receptors that have (tonic, phasic) responses, like the ones that convey pressure and vibration. If these were new shoes, however, and they pinched your foot and gave you a blister, you might be feeling pain, which is conveyed through the (proprioceptive, nociceptive) system and is more constant in duration, which is a feature of (tonic, phasic) responses.