Seckel pears are tiny - sometimes just a bite or two – with extremely firm flesh. They are great for baking, canning, and poaching. Their firm texture and acidic bite make them a bit trickier for eating out of hand, especially if you're expecting the soft, sweet experience of a ripe anjou or bartlett pear.
A itsy bit bigger, but very similar, are Forelle pears, also good snacking fruit.
Seckel pears are available from August into December; Forelle pears are in season from October into February.