Wooden Pat PET

1 cubic inch ≈ 1 lb of body weight — use this as a general guide when choosing.

Size Capacity Dimensions Best Suited For
Keepsake 20 Cu In 5"L × 3"W × 2.5"H A small portion of ashes, for sharing among family or symbolic keeping.
Small 60 Cu In 6"L × 4"W × 3"H Suitable for cats and small dogs up to ~60 lbs.
Medium 120 Cu In 7.5"L × 5.5"W × 3.5"H Suitable for medium to large dogs up to ~120 lbs.
Large 200 Cu In 9"L × 5.5"W × 4.5"H Suitable for large and giant breeds up to ~200 lbs (full remains).

Not sure which size to choose? As a simple rule, take the body weight in pounds and match it to the closest capacity in cubic inches. If you're between two sizes, size up — it's better to have extra room than not enough.