The most immediate physical difference between these two tablets is size and weight. The Lenovo IdeaTab Pro is notably larger — 291.18 × 189.1 mm with a volume of nearly 380 cm³ — compared to the Samsung Galaxy Tab S10 FE at 254.3 × 165.8 mm and roughly 253 cm³. That translates to a real-world weight gap of 120 g (620 g vs. 500 g), which is significant for a handheld device. Over extended sessions of reading, drawing, or media consumption, the Samsung's lighter, more compact body will feel noticeably less fatiguing, and it will also slip more easily into a bag.
In terms of build, the Samsung edges ahead again on thickness: its 6 mm profile is slimmer than the Lenovo's 6.9 mm, reinforcing its more portable character. More critically, the Galaxy Tab S10 FE carries a waterproof rating while the IdeaTab Pro offers no water resistance at all — a meaningful real-world advantage for use near water, in kitchens, or in unpredictable outdoor conditions. Both tablets include a stylus and neither ships with a detachable or backlit keyboard, so those accessories are a wash.
Overall, the Samsung Galaxy Tab S10 FE holds a clear edge in this design category. It is lighter, slimmer, more compact, and — most importantly — water-resistant, making it the better choice for users who prioritize portability and durability. The Lenovo's larger footprint may suit those who want more screen real estate, but from a pure design standpoint, the Samsung is the more refined and practical package.